According to Bell, this species inhabits the “temperate northern seas

rather than the Polar waters,” and is found in the North Sea, Baltic,

Iceland, Scandinavia, Denmark, and North Germany. Dr. Brown met with

a specimen a little south of Discoe Island, but can only speak of its

claims to a place in the Greenland Fauna as strongly probable. Bell

gives some interesting information with regard to the habits of this

species as observed in various British stations, and calls attention

to the remarkable fact, that whereas in this country it produces its

young in the months of October and November, on the Continent this is

always said to take place in February; he suggests, to account for

this singular discrepancy, that in our milder climate pairing takes

place much earlier than in Scandinavia. The young, which are born

white, are suckled for about a fortnight; the first coat is shed before

they take to the water, which is not for some weeks after birth. The

colour varies with age, sex, and season, so much, that it is not of

great service in their identification, their large size being the best

external guide. Lloyd, in his ‘Game-birds and Wild-fowl of Sweden and

Norway,’ speaking of this species, says that even should it somewhat

resemble the Common Seal in size and colour, as is at times the case,

it may always be readily distinguished from the latter by the greater

length of its claws and the superior breadth of its muzzle. The claws

project considerably beyond the ends of the toes, the first of which is

the longest. The general colour of the adult is greyish, tinged with

yellow, and spotted and blotched with darker grey; the under parts

lighter. The length of the adult varies from 7 to 10 feet. By the form

of its skull and teeth it is readily distinguished, as well as by the

great size of the animal. In the skull the brain-case is small, the

nasal opening very large, and the grinders conical, only the two hinder

pair in the upper, and the last pair in the lower jaw, double-rooted,

the rest simple. Professor Bell, in his history of ‘British

Quadrupeds,’ gives the generic and specific characters, as well as

excellent figures of the skulls of the various British Seals, which

will be found most useful in determining the species of any doubtful

individuals; other figures will be found in Dr. Gray’s ‘Catalogue of

the Seals and Whales in the British Museum.’

THE WALRUS, OR MORSE.

Of the many strange forms which the Zoological Society of London

has been the means of introducing to the stay-at-home naturalists

of this country, certainly not the least interesting is that of the

Walrus (_Trichechus rosmarus_, Linn.) It is true that in neither of

the instances in which the young animal has been brought alive to the

Gardens, has it long survived in its new home; but, short though its

residence amongst us, the opportunity has been afforded to many of

becoming acquainted with the Arctic stranger in _propriâ personâ_,

instead of through the distorted medium of the badly-stuffed skins,

or the equally bad representations of this interesting animal, which,

until recently, we have possessed. The first recorded appearance of

the Walrus in this country was, I believe, in 1624, when, according to

Hakluyt’s ‘Pilgrimes,’ a young one was brought to England by Master

Thomas Welden, in the _God-speed_, and duly presented at Court. In

1853 the Zoological Society became possessed of a young one, which

lived only a few days in their Gardens. On the 1st of November, 1867,

another was received, which lived till the 19th of December, when it

unfortunately died, notwithstanding the care bestowed upon it, both

as regards food and accommodation. This last was captured by the

whale-ship _Arctic_, on the 28th of August, 1867, in lat. 69° N. and

long. 64° W., and brought to Dundee, whence it was conveyed by Mr.

Bartlett to the Society’s Gardens. The captain of the _Arctic_ saw two

or three hundred walruses basking upon the ice, and sent out his boats

to the attack: among the killed was an old female followed by her young

one; the latter was taken on board and eventually brought to England.

[Illustration: Fig. 7. WALRUS, OR MORSE (_Trichechus rosmarus_).]

Although now confined to the icy seas of the Arctic circle, the Walrus

was probably not uncommon on our shores in times long past. The skull

is said to have been found in the peat near Ely, and Hector Boece,

in his ‘Cronikles of Scotland,’ mentions it as a regular inhabitant

of our shores in the end of the 15th century: in the present century

it has occurred several times, although it must be considered as a

very rare straggler, sadly out of its latitude. Wallace says that

its fossil remains have been found in Europe as far south as France,

and in America probably as far south as Virginia, and it was common

in the Gulf of St. Lawrence so late as 1770 (Leith Adams). In recent

times it has retreated before its great enemy, man, from the northern

coasts of Scandinavia to the circumpolar ice of Asia, America, and

Europe, sometimes, but rarely, reaching as far south as lat. 60°. In

Smith’s Sound the Walrus does not appear to move further north than

Cape Frazer, the meeting-place of the polar and southern tides: at this

point Captain Feilden saw a single example. Whenever met with, it is

the object of ruthless persecution, and is rapidly and surely becoming

exterminated wherever man can reach it; and but for its ice-loving

habits, which render its present strongholds always difficult, and

sometimes impossible, of access, it would doubtless long ere this have

become extinct.

Recently it has been met with on our shores, according to Bell, on the

coast of Harris in 1817; in the Orkneys in 1825; one was seen in 1827

in Hoy Sound, but not captured; and in 1841 one was killed near Harris.

Dr. Brown also states that two were seen, one in Orkney and the other

in Shetland, in 1857. Prof. Heddle also informed Mr. Harvie-Brown that

in 1849 or 1850 he saw an adult, and a young one, off the coast of the

parish of Walls, in Orkney (Harvie-Brown, _Proc. Nat. Hist. Soc. of

Glasgow_, 1879, p. 97.)[15]

The _Trichechus_ may be considered as intermediate between the true

Seals and the Eared Seals, to both of which families it has affinities:

it is carnivorous, feeding on mollusks, fish, and when it can get it,

the flesh of whales. The stomach of one, examined by Captain Feilden,

contained a large amount of green fluid oil, in which small particles

of _Ulva latissima_ could be detected, and minute fragments of the

shells of _Mya_. Its habits were so well and succinctly described by

Captain Cook a hundred years ago, that I cannot do better than quote

his own words, the accuracy of which has since been amply confirmed.

Whilst in Behring’s Straits, in lat. 70° 6′, and long. 196° 42′, on the

19th of August, 1778, Cook first met with the Walrus: “they lie,” he

says, “in herds of many hundreds upon the ice, huddling one over the

other like swine, and roar or bray very loud; so that in the night, or

in foggy weather, they gave us notice of the vicinity of the ice before

we could see it. We never found the whole herd asleep, some being

always on the watch. These, on the approach of the boat, would wake

those next to them, and the alarm being thus gradually communicated,

the whole herd would awake presently. But they were seldom in a hurry

to get away till after they had been once fired at, then they would

tumble one over the other into the sea in the utmost confusion; and if

we did not at the first discharge kill those we fired at, we generally

lost them, though mortally wounded. They do not appear to us to be that

dangerous animal some authors have described; not even when attacked.

They are rather more so to appearance than in reality. Vast numbers

of them would follow and come close up to the boats, but the flash of

a musquet in the pan, or even the bare pointing of one at them, would

send them down in an instant. The female will defend the young one to

the very last, and at the expense of her own life, whether in the water

or upon the ice. Nor will the young one quit the dam, though she be

dead; so that if you kill one you are sure of the other. The dam, when

in the water, holds the young one between her fore-fins.”[16] Since

Cook’s time the Walrus has learned to fear man, its only enemy except

the Polar Bear, and is more difficult to approach. When wounded, or its

young in danger, it has been known fiercely to attack the boats sent

for its capture, striving to overturn them, and piercing their sides

with its tusks: many serious accidents have been the result.

[Illustration: Fig. 8. _Vacca marina_ (reduced from Gesner).]

The number of Walruses killed annually by the Norwegian and Russian

hunters is very considerable; probably nearly an equal number are

wounded and lost. As the female produces only a single young one at

a birth, which is said to remain with the mother nearly two years,

“until its tusks are grown long enough to be used in grubbing up the

shell mud at the sea-bottom,” it will readily be imagined that the

destruction is greatly in excess of the production, and that they

are rapidly decreasing in numbers. A communication in the _Field_ of

March 27th, 1880 (p. 381), received from St. Francisco, points out

even more serious consequences resulting from the reckless destruction

of the Walrus than the mere extermination of a species, itself a

matter of no small regret. “If,” says the writer, “the whalers reach

Behring Strait before the ice breaks up, they remain on the coast, and

often hunt the Walrus for weeks together, with startling and serious

results. Last year’s campaign was considered successful, as about

11,000 Walruses were secured, most of them within the Arctic Sea. But

to attain this result, _between thirty and forty thousand animals were

killed_, so that only _one-third_ of the number destroyed were actually

utilised. There can be no doubt as to the ultimate consequence of such

glaring imprudence; but last year they were so painfully apparent as

to touch even the hearts of those who occasioned them. Not that the

whalers were moved to compassion by the victims themselves, but by

the sufferings of the human beings who were deprived of their chief

source of subsistence. The hardy tribes in the neighbourhood of Behring

Strait literally cannot exist without the Walrus, and so long as they

were its only human enemies the number destroyed was inconsiderable.

But the herds soon dwindled under the superior weapons and appliances

of civilised nations, and the survivors retreated, like the Whales,

towards the Pole. By the end of last season, not a single Walrus was

left on the coast, and the immediate result was such a terrible famine

among the natives that the whalers themselves speak of it remorsefully.

The population north of St. Lawrence Bay has been reduced by one-third;

and in a village which formerly contained 200 inhabitants, only one man

survived. Several of the whalers have consequently refused to take any

part in future Walrus hunts on the coast; they assert that for every

hundred animals killed, a native family must perish by starvation, and

they will not incur so heavy a responsibility.”

[Illustration: Fig. 9. HEAD OF WALRUS (Modified after Murie).]

About the month of August they repair to the shore, and congregating in

vast herds on the beach of some secluded bay, lie for weeks together

in a semi-torpid condition, without moving or feeding. Should their

retreat be discovered whilst in this state, great is the slaughter.

Mr. Lamont, in his ‘Seasons with the Sea Horses,’ says that in 1852,

on a small island off Spitzbergen (one of the Thousand Islands), two

small sloops discovered a herd of Walruses consisting of three or four

thousand, nine hundred of which they succeeded in killing, only a small

portion of the produce of which, however, they were able to carry away.

The colour of the Walrus is brown, paling with age, and the skin is

thickly covered with short hairs; the adult reaches the length of 10

or 15 feet, or, according to some authorities, even more, and weighs

from two to three thousand pounds. Its rounded head, heavy muzzle,

thickly set with stout bristles, small, round blood-shot eyes, and

formidable tusks, give to this animal a ferocious appearance which

is foreign to its nature, except when greatly excited or at pairing

time, when the old bulls are said to fight with great fierceness and

determination. A full-grown Walrus will yield from five to six hundred

pounds of blubber, the oil from which, however, is not so fine as that

of the Seal. The ivory tusks were formerly much used by dentists; at

present, I believe, owing to the introduction of vulcanite, very little

is applied to that purpose. Mr. Lamont mentions 24 in. in length and 4

lb. each in weight, as the size of a good pair of bull’s tusks: a pair

in the Norwich Museum measure 32 in. in length, and the heavier of the

two weighs 9 lb. 9 oz. The immensely elongated canine teeth which form

the “tusks,” are found in both sexes, but are shorter and more slender

in the female than in the male. The skin of the Walrus is valuable for

many purposes.

[Illustration: Fig. 10. “SEA HORSE” (_After Cook_).]

Few animals, so long known to man, have, when figured, been represented

so inaccurately as the Walrus: the hind feet are almost invariably

depicted extended backwards, like those of the Seal (so also in stuffed

specimens), whereas in the living animals they can be directed to the

front, and serve as supports to the body in progression on the land or

ice, in the same manner as the hind limbs of the eared seals. Dr. J.

E. Gray, in an article ‘On the Attitudes and Figures of the Morse,’

in the Proceedings of the Zoological Society of London for 1853, pp.

112-16, reproduces some of the wonderful prints of this animal from old

authors, most of which are purely imaginary: Fig. 8, p. 37, is copied

from one of these. By far the best portrait known, till quite recently,

is one published in Amsterdam in 1613, where an old female and her

young one are very accurately depicted: this has been reproduced in

Bell’s ‘British Quadrupeds,’ 2nd edition, p. 269. Fig. 10 is copied

from the “Sea Horse,” in the foreground of Cook’s illustration in ‘A

Voyage to the Pacific,’ &c., 1784 edit., vol. ii., p. 446; as will

be seen, this figure forms the source from which most subsequent

illustrations were derived. Fig. 7 is taken, by kind permission of the

late Mr. F. Buckland, from his ‘Log-book of a Fisherman and Zoologist,’

and represents “Jemmy,” the young Walrus, whose brief sojourn in the

Zoological Gardens has already been referred to. One of Mr. Wolf’s

“Zoological Sketches” represents a herd of Walruses in almost every

conceivable attitude, and of course beautifully drawn and coloured.

Some authors recognise two distinct species of Walrus, one of which

is said to be confined to the northern shores of the Atlantic,

the other to the Pacific Ocean. Mr. Allen, in the ‘North American

Pinnipeds,’ enters at length into the subject, and minutely describes

the peculiarities which characterise each species. Reviving, after the

example of Malmgren, the almost obsolete generic name of _Odobænus_, he

describes the Atlantic Walrus under the name _O. rosmarus_; the animal

found in the Pacific he calls _O. obesus_. The chief external points

of difference in the latter appear to be in the facial outline, the

longer and thinner tusks, “generally more convergent, with much greater

inward curvature; the mystacial bristles shorter and smaller, and the

muzzle relatively deeper and broader, in corelation with the greater

breadth and depth of the skull anteriorly.” The eyes are also said to

lack the “fiery red” appearance attributed to the Atlantic Walrus,

and to be smaller and very protuberant. Cook’s figure reproduced at

p. 41, also that at p. 177 of Scammon’s book, are those of _Odobænus

obesus_, and the fine pair of tusks mentioned at p. 40, as now in the

Norwich Museum, were probably also obtained from a Pacific Walrus. The

figure at p. 33, and the excellent figure by Wolf, at p. 457 of Lloyd’s

‘Game-birds and Wild-fowl of Sweden and Norway,’ are of the Atlantic

Walrus.

It is much to be regretted that the extinction of this harmless and

useful animal is merely a matter of time, and that perhaps before

many years have passed it may have ceased to exist; the only hope

appears to be that when it has become too scarce to render its

pursuit remunerative, a remnant may still be left to continue the

species around the far off and unapproachable islands of the Arctic

seas. Even in Franz Josef Land, where, in the summer of 1880, Mr.

Leigh-Smith found the Walrus very abundant: it will probably not

long remain unmolested, for that gentleman informed Captain Feilden

that the Norwegian walrus-hunters, when they heard of his discovery,

talked of pushing on for Franz Josef Land next summer, the Spitsbergen

walrus-hunting having become very uncertain, from the paucity and

wariness of the animals.[17]

CETACEA.

The occasional stranding upon our shores of some monster member of the

order CETACEA serves from time to time to reawaken our interest in

these wonderful animals, and sets us thinking how little we know about

them, and how small is our acquaintance with their life-history.

Nor is this lack of information surprising when we consider that

the difficulties in the way of studying the larger Cetacea, are so

great as to be almost insuperable to any ordinary person, and even

to the leaders of zoological science rarely does the opportunity

present itself of examining specimens in the flesh; for, of the rare

instances in which they are cast ashore, the majority occur in wild

and unfrequented parts of the coast, where they are probably cut up

for their oil before a naturalist has an opportunity of examining

them. From their unnatural position when cast up, and their altered

appearance, owing to the falling in of some parts and the distension of

others, correct portraiture is almost impossible; and their great size

renders it difficult and expensive to make them serviceable to science,

while from the putrid condition in which they are frequently found, a

close examination is too often anything but agreeable. If seen in their

native element, where alone they _should_ be seen duly to appreciate

their grand proportions and perfect adaptation to their mode of life,

the view must be brief and too often distant, certainly affording rare

opportunities for close observation. There is thus little left for

naturalists to study, except the bony skeletons, and of these often

mere fragments. Under these circumstances, we shall cease to wonder at

the great confusion which, till recently, existed in the classification

and nomenclature of the _Cetacea_, and which has been only partially

cleared away, chiefly by the labours of Professors Flower and Turner

in this country, and by Professors Eschricht, Reinhardt, Van Beneden,

Gervais, and others on the continent. The literature of the subject is

widely scattered and difficult of access; and, although Dr. Gray and

Professor Flower have done much to condense and systematize what is

known, our acquaintance with the tropical and southern species of this

interesting order is not at present sufficient to furnish materials

for a monograph worthy of the subject. No class of animals has been

called so many names, or so vilely caricatured in portraits, as the

unfortunate Whales.

It is scarcely necessary now to say that the _Cetacea_ hold a fully

recognized place in the great class _Mammalia_, although this honour

has not always been accorded to them. Ray classed them with the Fishes;

and although Linnæus finally placed them in their true position,

Pennant, following his earlier mistake, failed to do so. The members

of this order, which includes the Whales proper, Narwhal, Dolphins,

and Porpoises (with which, until recently, the Dugong and Manatees

were improperly associated under the name of Herbivorous Cetaceans),

bring forth their young alive. These are nourished by the female,

which, for this purpose, is furnished with two inguinal mammæ. They are

warm-blooded, and breathe by means of lungs, rendering frequent visits

to the surface of the water necessary, as the animal can only respire

when the orifice of the nostrils, called the blow-hole, which is placed

on the top of the head, is above water. The breathing apparatus is very

peculiar, being so modified that the air is admitted into the trachea

without passing through the mouth; the Whale can thus breathe freely,

provided the blow-hole be above water, even when its mouth is submerged

or filled with water. There are no external ears, but a small aperture

situated just behind the eye, communicates with a perfectly-constructed

internal hearing apparatus, and this, as the water is an excellent

conductor of sound, is all-sufficient. The food of the _Cetacea_

consists of various forms of marine animals, from the Seal, which

frequently forms a meal to the fierce Grampus, to the minute creatures

which go to build up the giant form of the Right-Whale. Some possess

numerous formidable teeth in both jaws; others have teeth in the

lower jaw only; and in one section the teeth are only present in the

embryo, but in their stead, from the upper jaw depend curious plates,

arranged side by side, to which the name of _baleen_ has been given.

The animal is encased in a layer of fat called “blubber,” which lies

beneath the skin, and serves to retain the heat of the body, and the

skin is smooth, polished, and quite devoid of hair or scales. On the

back of most species is found a fleshy dorsal fin, and the fore limbs

are represented by flippers externally undivided; the hind limbs, so

far as external appearance is concerned, are altogether absent, but a

rudimentary pelvis is found embedded in the flesh. The tail-fin forms

the chief organ of locomotion: it is always fixed horizontally, and is

of great size and power, enabling the animal, by its vigorous use, to

attain great speed. There are many and striking peculiarities in the

bony skeleton which it is not necessary here to enumerate.

[Illustration: Fig. 11. MEDIAN SECTION, SHOWING OUTSIDE LEFT HALF OF

SKULL OF WHALEBONE WHALE, WITH BALEEN IN POSITION (_modified after

Eschricht_).

=Br.=, brain cavity; =J=, =J*=, upper and lower jaw-bones; =bo=,

=bo=, being roughened parts of the bone sawn through; arrows indicate

the narial passages, which open at =s=, spout-hole; =w=, whalebone;

=t=, tongue, in dotted outline; =n=, nerve aperture, lower jaw.

]

Before proceeding to give some account of the species which have been

found in the British Seas, it will first be necessary to say a few

words as to the arrangement of the genera and species. I shall enter

into this part of the subject, however, so far only as is necessary for

us clearly to understand the relative positions of the species which we

shall have to consider.

Professor Flower divides the order _Cetacea_ into two sub-orders:

First, _Mystacoceti_, or _Balænoidea_, in all the members of

which baleen takes the place of teeth, which are never developed,

disappearing before birth; second, _Odontoceti_ or _Delphinoidea_,

in which teeth (sometimes very numerous) are always developed after

birth. The first sub-order is a very restricted one, embracing only

two families, _Balænidæ_ and _Balænopteridæ_, to the former of which

belong the two genera of Right-Whales, _Balæna_ and _Eubalæna_; and

to the latter, two genera, namely, _Megaptera_ and _Balænoptera_. To

these two genera[18] belong the Rorquals, which occasionally occur

in the British seas. The second sub-order, _Odontoceti_, contains

the families of _Physeteridæ_, represented by the Sperm Whale,

Beaked Whale, and several allied species; _Platanistidæ_, consisting

of some curious forms found only in India and South America; and

_Delphinidæ_, comprising the Narwhal, Beluga, or White Whale, Grampus,

Porpoise, and Dolphins. The total number of British _Cetacea_ has been

variously estimated; Dr. Gray, in 1864, described thirty, and in 1873

thirty-three species; while Bell, whom we shall follow, recognised only

twenty-two species in his second edition, published in 1874.

The seals and whales of the British seas · 第 2 / 8 段