ventrali, utrinque crinito. Ovated ventricose trichoda, the apex acute,
with a furrow at the abdomen, and both sides of it ciliated.
212. TRICHODA ANAS. T. elongata, apice colli subtus crinito. Plate XXV.
Fig. 49. Long, the apex of the neck underneath hairy.
A smooth animalculum, five times broader than it is long, filled with
darkish molecules; it has a bright neck, _b c_; under the top of the
neck at _d_ a few unequal hairs are perceptible. Its motions are
languid. It is found in pure water.
213. TRICHODA BARBATA. T. elongata, teres, subtus ab apice ad medium
crinita. Long trichoda, round, the under part from the apex to the
middle hairy.
This animalculum is round, somewhat linear, with both ends obtuse; the
fore-part narrower, forming as it were a kind of neck, under which is a
row of fluctuating hairs. The trunk is full of grey molecules.
214. TRICHODA FARCIMEN. T. elongata, torulosa, setulis cincta. Plate
XXV. Fig. 50 and 52. Long and thick trichoda, surrounded with small
bristles.
The body is long, round, pellucid, and covered with very minute hairs;
it has also a great number of mucid vesicles about the body.
215. TRICHODA CRINITA. T. elongata, teres, undique ciliata, subtus ad
medium usque crinita. Long trichoda, round, everywhere ciliated on the
upper part, and the under part likewise hairy as far as the middle.
216. TRICHODA ANGULUS. T. angulata, apice crinita. Angular, the apex
hairy.
This animalculum is long, more convex than most of the genus, divided by
a kind of articulation into two parts equal in breadth, but of different
lengths, the fore-part being shorter than the hind-part; the apex
furnished with short waving hair, indistinct molecules withinside, no
hair on the hind-part.
217. TRICHODA LINTER. T. ovato oblonga, utraque extremitate prominula.
Plate XXV. Fig. 51. The shape of an oblong egg, with prominences at both
extremities.
Both extremities of the body are raised, so that the bottom becomes
convex, and the upper part depressed like a boat. It varies in shape at
different ages, and sometimes has a rotatory motion. It is found in an
infusion of old grass.
218. TRICHODA PAXILLUS. T. linearis depressa, antice truncata
crinitaque, postice obtusa. Linear flat trichoda, the fore-part
truncated and hairy, the hinder-part obtuse.
A long animalculum, full of grey molecules; the fore-part rather smaller
than the hind-part, and furnished with minute hairs. It was found in
salt water.
219. TRICHODA VERMICULARIS. T. elongata, cylindracea, collo brevi, apice
crinito. Plate XXVII. Fig. 1. Long cylindrical trichoda, with a short
neck, the apex hairy.
Gelatinous, the fore-part pellucid, the hind-part full of molecules. It
was found in river water. It is represented in different appearances in
the figure; _a_, the neck; _b_, the hairs; _c_, a little vesicle in the
hinder-part.
220. TRICHODA MELITŒA. T. oblonga, ciliata, colli dilatabilis, apice
globoso, pilifero. Plate XXVII. Fig. 3. Oblong ciliated trichoda, with a
dilatable neck, the apex globular, and surrounded with hairs, the edge
is ciliated, and a kind of peristaltic motion perceivable in it. It is
found, in salt water, though but very rarely. _a_, the neck; _b_, the
globular apex; _c_, the body ciliated.
221. TRICHODA FIMBRIATA. T. obovata, apice crinita, postice oblique
truncata, serrata. Plate XXVII. Fig. 2. Obovated trichoda, the apex
hairy, the hinder-part obliquely truncated and serrated.
222. TRICHODA CAMELUS. T. antice crinita, crassiuscula medio utrinque
emarginata. Thick, and the fore-part hairy, with notches on the middle
and each side.
The fore-part of the body is ventricose; the back divided by an incision
in the middle into two tubercles; the lower part of the belly sinuated;
its motions are languid. It is found, though not often, in vegetable
infusions.
223. TRICHODA AUGUR. T. oblonga, vertice truncata, antico corporis
margine, superne pedata, inferne setosa. The body is oblong, depressed,
pellucid, and filled with molecules; the vertex truncated, the fore-part
forming a small beak; underneath are three feet; beyond these, towards
the hinder-part, it is furnished with bristles.
224. TRICHODA PUPA. T. cucullata, fronte crinita, cauda inflexa, This
trichoda is hooded, the front hairy, the tail inflected.
The body is rather round, pellucid and consists of three parts; the
head, which is broad, appears to be hooded, the top being furnished with
very small hairs; a transparent vesicle occupies the lower region of the
head; and over the breast from the base of the head is suspended a
production resembling the sheath of the feet in the pupa of the gnat.
225. TRICHODA LUNARIS. T. arcuata, teres, apice crinita, cirro, caudali
inflexo. Arched trichoda, round, the apex hairy, the tail bent.
This animalculum is round and crystalline; the hind-part somewhat
smaller than the fore-part; the intestines are with difficulty
distinguished. The edge of the back and the part near the tail are
bright and clear. It bends itself into the form of an arch.
226. TRICHODA BILUNIS. T. arcuata, depressa, apice crinita, cauda
biseta. Arched flattened trichoda, the apex hairy, and two little
bristles proceeding from the tail.
227. TRICHODA RATTUS. T. oblonga, carinata, antice crinita, postice seta
longissima. Plate XXVII. Fig. 4. Oblong trichoda, with a kind of keel;
the fore-part hairy, and a very long bristle proceeding from the
hinder-part. _a_, the mouth; _b_, a small knob at the bending of the
tail; _c_, the tail.
228. TRICHODA TIGRIS. T. subcylindrica, elongata, apice crinita, cauda
setis duabus longis. This trichoda is long, and somewhat cylindrical,
the apex hairy, the tail divided into two long bristles.
It resembles the former, but differs in the form of the tail, which
consists of two bristles, and likewise in having a kind of incision in
the body, at some little distance from the apex.
229. TRICHODA POCILLUM. T. oblonga, antice truncata, crinita, cauda
articulata, biseta. Plate XXVII. Fig. 5 and 6. Oblong trichoda, the
fore-part truncated and hairy, the tail articulated, and divided into
two bristles.
The body is cylindrical, pellucid, muscular, and capable of being folded
up; it appears double; the interior part is full of molecules, with an
orbicular muscular appendage which it can open and shut, and this forms
the mouth. The external part is membranaceous, pellucid, dilated, and
marked with transverse streaks; the animalculum can protrude or withdraw
the orbicular membrane at pleasure. Some have four articulations in the
tail, others five; and it has two pair of bristles, or projecting parts,
one placed at the second joint, the other at the last. It has been
frequently found in marshes. In Fig. 6 it is seen with the mouth open;
in Fig. 5, with it shut, _a a_, the jaws; _b b_, the first bristles; _c
c_, the second pair; _d_, the spine at the tail.
230. TRICHODA CLAVUS. T. antice rotundata, crinita, postice
acuminato-caudata. The fore-part round and hairy, the hind-part
furnished with a sharp tail. This animalculum has a considerable
resemblance to a common nail.
231. TRICHODA CORNUTA. T. supra convexa, subtus plana, apice crinita,
cauda lineari simplici. Trichoda with the upper part convex, the under
side plain, the apex hairy, the tail linear and simple.
To these characters we may add, that the body is membranaceous,
elliptical, closely filled with molecules; the fore-part lunated, the
hinder-part round, and terminating in a tail as long as the body.
232. TRICHODA GALLINA. T. elongata, antice sinuata, fronte crinita,
cauda pilosa. Long trichoda, the fore-part sinuated, the front hairy,
the tail formed of small hairs.
It is of a grey colour, flat, with seven large molecules and globules
within it, the front obtuse, and set with hairs; the hinder-part
terminating in a tail formed of very fine hairs. It was found in river
water.
233. TRICHODA MUSCULUS. T. ovalis, antice crinita, postice subtus
caudata. Plate XXVII. Fig. 7. Egg-shaped, the fore-part hairy, the tail
projecting from the under part.
A smooth egg-shaped animalculum, with a double margin or line drawn
underneath it; the fore-part narrow, and furnished with short hairs,
which are continually playing about; underneath the hind-part is a small
tail. It has molecular intestines, and moves slowly. It is found in
infusions of hay which have been kept for some months, _a_, the head;
_b_, the tail.
234. TRICHODA DELPHIS. T. clavata, fronte crinita, cauda acuminata,
subreflexa. Clubbed trichoda, the front hairy, the tail small and rather
bent upwards.
It is smooth and pellucid, having the fore-part dilated into a
semicircle, gradually decreasing in breadth towards the tail; the front
is hairy, the hairs standing as rays from the semicircular edge; one of
these edges is sometimes contracted. It is to be found in river water.
235. TRICHODA DELPHINUS. T. oblonga, antice crinita, postice cauda
reflexa truncata. Plate XXVII. Fig. 8. Oblong, the fore-part hairy; in
the hind-part is the tail, which is turned back, the end of it
truncated.
A pellucid, smooth, egg-shaped animalculum; the hind-part terminating in
a tail about half the length of the body, dilated at the upper end,
truncated, and always bent upwards.
In the inside are vesicles of an unequal size; it moves sometimes on its
belly, sometimes on its side; the tail seldom varies its position. It
was found in hay which had been infused for some months, _a_, the hairs
on the fore-part; _b_, the tail.
236. TRICHODA CLAVA. T. clavata, fronte crinita, cauda reflexili. Club
trichoda, the fore-part hairy, the tail turned back.
The fore-part is thick, the hind-part narrow; both extremities obtuse,
pellucid, and replete with molecules; the hind-part bent down towards
the middle.
237. TRICHODA CUNICULUS. T. oblonga, antice crinita, postice
subacuminata. Oblong, the fore-part hairy, the hind-part rather acute,
filled with molecules and black vesicles.
238. TRICHODA FELIS. T. curvata, grossa, antice angustior, postice in
caudam attenuata, subtus longitudinaliter crinita. Plate XXVII. Fig. 9.
Curved trichoda, large, the fore-part small, the hinder-part gradually
diminishing into a tail; the under part set longitudinally with hairs.
_a_, the head; _b_, the tail; _c_, the hairs.
239. TRICHODA PISCIS. T. oblongata, antice crinita, postice in caudam
exquisitam attenuata. Plate XXVII. Fig. 13 and 14. Oblong, the fore-part
is hairy, the hind-part terminating in a very slender tail. It is
smooth, pellucid, much longer than broad, but of nearly an equal breadth
throughout, and filled with yellow molecules; the fore-part obtuse, the
hind-part exquisitely slender and transparent; the upper side is convex.
_a_, the fore-part; _b_, the tail.
240. TRICHODA LARUS. T. elongata, teres, crinita, cuspidi caudali
duplici. Long, round trichoda, surrounded with hairs, the tail divided
into two points. See Zoologia Danica.
241. TRICHODA LONGICAUDA. T. cylindracea, antice truncata et crinita,
cauda elongata, biarticulata et biseta. Plate XXVII. Fig. 10.
Cylindrical trichoda, the fore-part truncated and surrounded with hairs,
the tail long, furnished with two bristles, and having two joints. _a_,
the hairs at the mouth; _d_, the oesophagus; _e_, the articulation of
the tail; _f_, the bristles.
242. TRICHODA FIXA. T. sphærica, peripheria crinita, pedicello
solitario. Spherical trichoda; this has the circumference set with
hairs, and a little solitary pedicle projecting from the body.
243. TRICHODA INQUILINUS. T. vaginata, folliculo cylindrico hyalino,
pedicello intra folliculum retortili. Sheathed trichoda, in a
cylindrical transparent bag, having a little pedicle bent back within
the bag. See Zool. Dan. prodr. addend. p. 281.
244. TRICHODA INGENITA. T. vaginata, folliculo depressa, basi latiore
sessilis. Sheathed trichoda, the bag depressed, the base broadest.
The animalculum that is contained in this sheath is funnel-shaped, with
one or more hairs, proceeding from each side of the mouth of the funnel.
It can extend or contract itself freely in the bag, fixing its tail to
the base, without touching the sides. It was found in salt water.
245. TRICHODA INNATA. T. vaginata, folliculo cylindrico, pedicello extra
folliculum. Plate XXVII. Fig. 11. Trichoda sheathed in a cylindrical
bag, with a pedicle passing through and projecting beyond it. These
characters distinguish it sufficiently from the preceding one. _b_, the
animalculum in the sheath; _d_, the tail.
246. TRICHODA TRANSFUGA. T. latiuscula, antice crinita, postice setosa,
altero latere sinuata, altero mucronata. Broad trichoda, the fore-part
hairy, the hinder-part full of bristles; one side sinuated, and the
other pointed. See Zool. Dan. prod. addend. p. 281.
247. TRICHODA CILIATA. T. ventricosa, postice crinibus pectinata.
Ventricose, the hinder-part covered with hair. See Zool. Dan. Icon. Tab.
73, Fig. 13, 15.
248. TRICHODA BULLA. T. membranacea, lateribus inflexis, antice et
postice crinita. Membranaceous trichoda, the sides bent inwards; the
fore and hind-part are both furnished with hairs.
249. TRICHODA PELLIONELLA. T. cylindracea, antice crinita, postice
setosa. Cylindrical, the fore-part hairy, the hinder-part furnished with
bristles.
This trichoda is rather thick in the middle, and pellucid, with a few
molecules here and there, the sides obtuse, the fore-part ciliated with
very fine hairs, the hind part terminating in a kind of bristles.
250. TRICHODA CYLLIDIUM. T. ovata, apice hiante, basique crinita. Plate
XXVII. Fig. 15. Egg-shaped, the apex gaping, the base hairy.
Pellucid, the hinder extremity filled with globules of various sizes,
the fore-part narrower, without any appearance of an external organ. It
vacillates upon the edge, commonly advancing on its flat side, and
continually drawing in water; it then gapes, and opens into a very acute
angle, almost to the middle of the body; but this is done so
instantaneously, that it is scarcely perceptible. _a_, the mouth; _b_,
the hairs or bristles, which it extends when nearly expiring.
251. TRICHODA CURSOR. T. ovata, antice crinita, postice duplici pilorum
strictorum et curvorum fasciculo. Oval trichoda, the fore-part hairy,
and the hinder-part also furnished with some straight and curved hairs
in two fascicles.
The body is flat and filled with molecules; in the fore-part is an
oblong empty space, into which we may sometimes see the water sucked in.
252. TRICHODA PULEX. T. ovata, antice incisa, fronte et basi crinita.
Plate XXVII. Fig. 12. Egg-shaped, with an incision in the fore-part;
the front and base hairy. _a_, the anterior part; _b_, the posterior
part; _c_, the incision.
253. TRICHODA LYNCEUS. T. subquadrata, rostro adunco, ore crinito. Plate
XXVII. Fig. 16. Nearly square, with a crooked beak, the mouth hairy.
At first sight it does not seem very dissimilar to some of the monoculi.
The body is membranaceous, and appears compressed, stretched out into a
beak above, the lower part truncated; under the beak is a little bundle
of hairs; the lower edge bends in and out, and is surrounded with a few
bristles. The intestines are beautifully visible, and a small bent tube
goes from the mouth to them in the middle of the body; these, as well as
the tube, are in frequent agitation. There is likewise another tube
between the fore and hind edge filled with a blue liquor. _a_, the beak;
_b_, the mouth; _c_, the base.
254. TRICHODA EROSA. T. orbicularis, antice emarginata, altero latere
crinita, postice setosa. Orbicular trichoda, the fore-part notched; one
side furnished with hairs, the hinder-part with bristles.
255. TRICHODA ROSTRATA. T. depressa, mutabilis, flavescens, ciliis
longis setisque pediformibus. Depressed trichoda, mutable, yellow, with
long ciliated hairs, and feet tapering to a point.
The figure of the body is generally triangular; the apex formed into an
obtuse beak, which the animalculum sometimes draws in, so that it
appears quite round; the feet are four in number, one of them is longer
than the rest; both feet and hairs are within the margin. It is found in
water where duck-weed has been kept.
256. TRICHODA LAGENA. T. teres, ventricosa, rostro producta, postice
setosa. Round ventricose trichoda, with a long neck, and the lower end
set with bristles.
257. TRICHODA CHARON. T. cymbiformis fulcata, antice et postice crinita.
Plate XXVII. Fig. 17 and 18. Boat-shaped trichoda with furrows, the fore
and hind-parts both hairy.
The body is oval; it resembles a boat as well in its motion as shape;
the upper part is hollowed, the under part furrowed and convex; the
stern round, with several hairs proceeding from it. It was found in salt
water. Fig. 17, _a_, the head; _b_, the tail. Fig. 18, _d_, a pellucid
bubble that is sometimes to be perceived.
258. TRICHODA CIMEX. T. ovalis, marginibus lucidis, antice et postice
crinita. Plate XXVII. Fig. 19. Oval trichoda, with a lucid margin, both
the fore and hind-part hairy.
It is about the size of the trichoda lynceus, No. 253, has an oval body,
with a convex back, flat belly, and an incision in the margin of the
fore-part, the edges of which incision appear to be in motion. Its
intestines are pellucid and ill-defined. When it meets with any
obstacles in swimming, it makes use of four small bristles, which are
fixed to the under side, as feet. _a_, the hairs in the fore-part; _b_,
the bristles at the hind-part; _d_, the back; _e_, two small projecting
hairs; _f_, the substance to which the animalculum has affixed itself.
259. TRICHODA CICADA. T. ovalis, marginibus obscuris, antice et subtus
crinita, postice mutica. Oval trichoda, with an obscure margin, the
fore-part covered with hairs on the under side, and the hinder-part
beardless.
It does not differ considerably from the preceding, though Müller has
pointed out some shades by which they may be discriminated.
XIV. KERONA.
Vermis inconspicuus corniculatus. An invisible worm with horns.
260. KERONA RASTELLUM. K. orbicularis membranacea, nasuta, corniculis in
tota pagina. Membranaceous, orbicular kerona, with one projecting point,
the upper surface covered with small horns. There are three rows of
horns on the back, which nearly occupy the whole of it. It was found in
river water.
261. KERONA LYNCASTER. K. subquadrata, rostro obtuso, disco corniculis
micantibus. This species of kerona is rather square, and its disc
furnished with shining horns. See Zool. Dan. prod. add. p. 281.
262. KERONA HISTRIO. K. oblonga, antice punctis mucronatis nigris,
postice pinnulis longitudinalibus instructa. Plate XXVII. Fig. 20.
It is an oblong membrane, pellucid, with four or five black points in
the fore-part, which are continually changing their situation, thick set
with small globules in the middle, among which four larger ones are
sometimes perceived, these are probably eggs; in the middle space of the
hind-part are some longitudinal strokes resembling bristles, which,
however, do not seem to project beyond the body. _b_, the horns; _c_,
some hairs; _d_, a solitary horn; _e_, a large globule; _f_, some
bristles.
263. KERONA CYPRIS. K. obovata, versus postica superne sinuata, antice
crinita. Plate XXVII. Fig. 21. Egg-shaped, towards the hind-part
sinuated, the fore-part hairy.
This animalculum is compressed, and somewhat of a pear-shape; the
fore-part broad and blunt; the front is furnished with short hairs or
little vibrating points inserted under the edge _a_, shorter in the
hind-part _e_, partly extended straight, and partly bent down, having a
retrograde motion. It is found in water which is covered with lemna.
264. KERONA HAUSTRUM. K. orbiculata, corniculis mediis, antice
membranacea ciliata, postice setosa. Orbicular kerona, with the horns in
the middle, the fore-part membranaceous and ciliated, and several
bristles at the hinder-part.
265. KERONA HAUSTELLUM. Differs from the preceding only in having the
hinder-part without any bristles.
266. KERONA PATELLA. K. univalvis, antice emarginata corniculata,
postice setis flexilibus pendulis. Plate XXVII. Fig. 22 and 23. Kerona
with a univalved shell, orbicular, crystalline; the fore-part somewhat
notched; the fleshy body lies in the middle of the shell; above and
below are hairs or horns of different lengths jutting out beyond the
shell, and acting instead of feet and oars, some of which are bent; the
superior ones constitute a double transverse row. _a_, the fore-part;
_b_, the horns; _d_, a lunated figure in the shell; _c_, a pulpous body;
_f_, bristles at the hinder-part.
267. KERONA VANNUS. K. ovalis subdepressa, margine altero flexo,
opposito ciliato, corniculis anticis, setisque posticis. Oval and rather
flat kerona, with one edge bent, the opposite one ciliated, the front
furnished with horns, and the hind-part with bristles.
268. KERONA PULLASTER. K. ovata, antice sinuata, fronte crestata, basi
crinita. Plate XXVII. Fig. 24 and 25. Oval, the fore-part sinuated, a
crest on the front, the base hairy.
It agrees in many respects with the trichoda pulex, No. 252; but the
upper part is pellucid, without any black molecules; the front
truncated, the whole surface of the head covered with hair, and the
fore-part sinuous. _a_, the horns; _b_, the hairs at the hinder-part;
_c_, the cilia of the front.
269. KERONA MYTILLUS. K. subclavata, utraque extremitate latiori,
hyalina ciliata. Plate XXVII. Fig. 29. Rather clubbed, broad at both
extremities, clear and ciliated.
A large animalculum, the fore and hind-part rounded, very pellucid and
white, dark in the middle, with black intestines, intermixed with a few
pellucid vesicles; both extremities appear as if composed of two thin
plates. The fore-part is ciliated, the hairs short, lying within the
margin; it is also ornamented with two small horns, erected from an
obscure mass; with these it agitates the water, forming a little
whirlpool. The hind-part is likewise ciliated, and furnished with two
bristles, extending beyond the margin. _a_, the horns; _b_, the
fore-part ciliated; _c_, the hind-part; _d_, projecting bristles.
270. KERONA LEPUS. K. ovata, apice crinito, basi setosa. Egg-shaped, the
fore-part hairy, the base furnished with bristles.
The body is egg-shaped, compressed, pellucid, and crowned with short
waving hairs, the base terminating with bristles.
271. KERONA SILURUS. K. oblonga, antice et postice crinita, dorso
ciliato. Oblong, the fore and hind-part hairy, the back ciliated.
An oval smooth animalculum, somewhat crooked and opake, with a fascicle
of vibrating hair on the fore-part; it has a sharp tail, furnished with
unequal rows of moveable hairs, producing a rotatory motion; in the
inside are some partly lucid, and partly opake points. The figure varies
from oval to oblong, the filaments of the conferva are often entangled
in the tail.
272. KERONA CALVITIUM. R. latiuscula, oblonga, antice corniculis
micantibus. Rather broad, oblong, with glittering horns on the
fore-part.
The body is rather broad and flat, both sides obtuse, filled with black
molecules, and there is a dark spot near the hinder-part, where there
are likewise a few short bristles. The interjacent vesicles are
pellucid; no hairs on the fore-part, but instead thereof two little
moveable horns, and from three to five moveable black points. It is
found in the infusions of vegetables.
273. KERONA PUSTULATA. K. ovalis convexa, postice altero margine
sinuata, utraque extremitate crinita, corniculisque anticis. Oval,
convex, kerona, one edge of the hinder-part sinuated, both ends set with
hairs, and some horns placed on the fore-part. This animalculum was
found in salt water.
XV. HIMANTOPUS.
Vermis inconspicuus, pellucidus, cirratus. A pellucid, invisible,
cirrated[127] worm.
[127] That is, furnished with a tuft or lock of hair.