=Abdomen= (_ăb-dō´mĕn_).--In mammals, that portion of the body-cavity
which is separated from the thorax or chest by the diaphragm. In insects
the third or last portion.
=Ametabolic= (_ȧ-mĕt´a-bŏl´ĭk_).--Referring to insects and other animals
which do not undergo a metamorphosis, or change of form.
=Amoeba= (_ȧ-mē´bȧ_).--One of the Protozoa that is continually changing
its shape.
=Amorphous= (_ȧmŏr´fŭs_).--Without a definite figure; shapeless;
especially applicable to sponges.
=Amphibia= (_ăm-fĭb´ĭ-ȧ_).--A class of vertebrates, breathing in water
while young and in air when mature. The term amphibious is applied to
fishes, molluscs, etc., that are capable of changing the nature of their
respiration at will.
=Annelida= (_ăn-nĕl´ĭ-dȧ_).--Articulate animals whose bodies possess no
jointed members, as the leech, and worm tribe.
=Annulate= (_ăn´ū̇-lā̇t_).--Animals whose bodies are composed of a
series of ring-shaped divisions.
=Anthropoid= (ăn-thrō̇-poid).--The highest order of apes.
=Apterous= (_ăp´tĕr-ŭs_).--Destitute of wings.
=Arachnida= (_ȧ-răk´nĭ-dȧ_).--Articulate animals with legs, but without
wings, including spiders, mites, scorpions, etc.
=Arthropoda= (_är-thrŏp´o-dȧ_).--Articulated animals with jointed feet,
as crabs, insects, etc.
=Asexual= (_ȧ-sĕks´ū-al_).--A term applied to animals, as Aphis, in
which the reproductive organs are imperfect, and the young are produced
by budding.
=Auricle= (_a̱´rĭ-k´l_).--The cavity of the heart which receives the
blood and transmits it to the ventricle.
=Bacteria= (_băk-tē´rĭ-ȧ_).--Microscopic vegetable organism, belonging
to the class Algæ, usually in the form of a jointed, rod-like filament,
and found in putrefying organic infusions. Bacteria are destitute of
chlorophyll, and are the smallest of microscopic organisms. They are
very widely diffused in nature, and multiply with marvelous rapidity.
Certain species are active agents in fermentation, while others appear
to be the cause of certain infectious diseases.
=Batrachia= (_bȧ-trā´kĭ-ȧ_).--Applied to frogs, toads, and salamanders.
=Bimana= (_bĭm´ȧ-nȧ_).--Two-handed animals whose posterior extremities
are used only to keep them in an erect position, and for the purpose of
locomotion. They comprise the varieties of man.
=Blastoderm= (_blăs´tō-derm_).--The outer layer of the germ-cells of the
embryo.
=Carapace= (_kăr´ȧ-pās_).--A sort of shell which protects and encloses
the bodies of tortoises and some reptiles, etc.
=Carnivora= (_kär-nĭv´ō-rȧ_).--Group of mammals, including the lion,
tiger, wolf, bear, seal, etc. They feed upon flesh, though some of them,
as the bears, also eat vegetable food. The teeth are large and sharp,
suitable for cutting flesh, and the jaws powerful.
=Carnivorous= (_kär-niv´ō-rus_).--Eating or feeding on flesh. The term
is applied to animals which naturally seek flesh for food, as the tiger,
dog, etc.
=Cephalopoda= (_sĕf-a-lŏp´ō-dȧ_).--The highest class of Molluscs.
=Cetacea= (_sē-tā´shē-ȧ_).--The whales.
=Chiroptera= (_ki-rŏp´te-rȧ_).--The bats.
=Chrysalis= (_krĭs´ȧ-lĭs_).--The pupa state of an insect.
=Coelenterata= (_sē-lĕ´te-rā´tȧ_).--The group of Invertebrates,
comprising hydrozoa and actinozoa.
=Coleoptera= (_kol-e-op´ter-a_).--The beetles.
=Cilia= (_sĭl´ĭ-a_).--Hair-like organs of Infusoria. Microscopic
filaments attached to cells, usually within the body, and moving usually
rhythmically.
=Crustacea= (_krŭs-tā´shē-ȧ_).--Applied to lobsters, crabs, etc.
=Dipnoi= (_dĭp´nō-ī_ or _-noi_).--An order of fishes.
=Diptera= (_dĭp´tē-rā_).--Two-winged flies; an order of insects.
=Echinodermata= (_e-kī´nô-dẽr´mȧ-tȧ_).--Applied to the sea-urchin, a
subdivision of animals.
=Edentata= (_ē´dĕn-tā´tȧ_).--Those animals having imperfect dental
apparatus. Their digits, too, are generally sunk in large and crooked
claws.
=Elasmobranchii= (_ē-lăs´mō-brănk-ē_).--The sharks and rays.
=Fauna= (_faw´nä_).--The native animals of a certain locality.
=Flagellum= (_flâ-jēl´lŭm_).--A whip. The appendage of some Protozoa.
=Foraminifera= (_fô-răm´ĭ-nĭf´e-rȧ_).--Animals with perforated shells.
=Ganoid= (_gā´noid_ or _găn´oid_).--Applied to a certain class of fish.
=Gasteropoda= (_găs´te-rŏp´ô-dȧ_).--A class of Molluscs. Some of them
form shells, while others are destitute of them,--as the slug, snail,
etc.
=Grallatores= (_grăl´lȧ-tō´rēz_).--Wading-birds.
=Hibernation= (_hī-bẽr-nā´shŭn_).--The state of animals that sleep
throughout winter.
=Hymenoptera= (_hī-mē-nŏp´te-rȧ_).--An order of insects with two pairs
of membraneous wings.
=Ichthyology= (_ĭk-thĭ-ŏl´ō-jy_).--The science of fishes, or that part
of zoology which treats of fishes, their structure, habits, etc.
=Infusoria= (_ĭn´fû-sō´rĭ-ȧ_).--Minute animals that live in stagnant
water. A class of Protozoa.
=Insectivora= (_ĭn´sĕk-tĭv´ô-rȧ_).--Insect-eaters. They comprise the
shrew, mole, hedgehog, etc.
=Invertebrate= (_ĭn-vēr´te-brāt_).--Animals that have no vertebral
column, or bones properly so called.
=Larva= (_lär´vȧ_).--The second stage of the insect, a caterpillar,
grub, or maggot.
=Mandible= (_măn´dĭ-bl_).--The upper jaw of insects; the lower jaw of
vertebrates.
=Marsupial= (_Mär-su´pĭ-al_).--An order of mammals that carry their
young in a pouch, as the kangaroo.
=Mollusc= (_mŏl’lŭsk_).--Animals whose bodies are soft and pulpy.
=Monotremata= (_mon-ō-trē´ma-ta_).--An order of mammals having the
intestine and the ducts of the urinary and genital organs open into a
common orifice.
=Myriapoda= (_mĭr-ĭ-ŏp´ō-dȧ_).--A class of arthropoda. Articulate land
animals having many legs, as the centipede.
=Natatores= (_nā´tȧ-tō´rēz_).--An order of birds that swim.
=Neuroptera= (_nū-rŏp´tĕ-rȧ_).--An order of insects with four
membraneous wings, as dragon-flies.
=Nocturnal= (_nŏk-tûr´nal_).--Of the night. Nocturnal birds are birds
that fly abroad during the night only.
=Notochord= (_nō´tō̇-kôrd_).--A primitive backbone.
=Omnivorous= (_ŏm-nĭv´ō-rŭs_).--Living on both vegetables and flesh.
=Orthoptera= (_ôr-thŏp´tē̇-rȧ_).--An order of straight-winged insects,
as cockroaches, grasshoppers, etc.
=Oviparous= (_ō-vĭp´ȧ-rŭs_).--Applied to animals which produce eggs
instead of living young.
=Ovipositor= (_ō´vĭ-pŏz´ĭ-tẽr_).--In insects an organ by which eggs are
deposited in wood, etc.
=Pachydermata= (_păk´ĭ-dẽr-mȧ-tȧ_).--A group of hoofed mammals
distinguished for the thickness of their skins, including the elephant,
hippopotamus, rhinoceros, tapir, horse, and hog.
=Pelagic= (_pē-lăj´-ĭk_).--Living on the high seas, away from the coast;
in mid-ocean.
=Polyp= (_pŏl´ĭp_).--Separate coral animals.
=Protoplasm= (_prō´tō̇-plāz’m_).--The albuminous, elementary matter
forming cells and the body-substance of Protozoa.
=Protozoa= (_prō´tō-zō´ȧ_).--The lowest forms of animal life.
=Pupa= (_pū´pȧ_).--The third, or usually quiescent, chrysalis stage of
insects.
=Paleontology= (_pā-lē-ŏn-tŏl´ŏ-gy_).--The science of ancient beings or
creatures; applied to the science of the fossil remains of animals and
plants now extinct.
=Quadrumana= (_kwŏd-rōō´mȧ-nȧ_).--Monkeys.
=Quadruped= (_kwŏd´ru-pĕd_).--Four-footed animals.
=Radiates= (_rā´dĭ-āts_).--Animals having a central mouth, around which
the body forms a star-shaped figure.
=Ratitæ= (_rȧ-tī´tẽ_).--A division of birds with a keelless, raft or
punt-like sternum.
=Rhizopoda= (_ri-zŏp´ō̇-dȧ_).--The root-footed Protozoa.
=Rodentia= (_rō-dĕn´shĭ-ȧ_).--An order of animals which gnaw.
=Rotifera= (_rō-tĭf´ẽ-rȧ_).--An order of crustacea with a pair of
ciliated appendages in motion, resembling wheels.
=Ruminantia= (_roo-mĭ-nă´shĭ-ȧ_).--The cloven-footed quadrupeds. Those
that chew the cud. They have cloven feet, want incisors, and have a
stomach with four cavities.
=Taxidermy= (_tăks´ĭ-dĕr-my_).--The art of preparing and preserving
specimens of animals.
=Teleostei= (_tē´lẽ-ŏs´te-ī_ or _tĕl´e_).--An order including most of
the bony fishes.
=Thorax= (_thō´rāks_).--The chest of vertebrates, the middle portion of
insects, etc.
=Ungulata= (_ŭn-gū-lā-tȧ_).--The order of hoofed mammals.
=Vertebra= (_vĕr´tē-brȧ_).--One of the bones of the spinal column.
=Vertebrates= (_vẽr´te-brāts_).--Animals provided with vertebræ. One of
the grand divisions of the animal kingdom, comprising all animals that
have a backbone composed of bony or cartilaginous vertebræ, together
with those in which the backbone is represented by a simple undivided
notochord.
=Viviparous= (_vi-vĭp´ȧ-rŭs_).--Applied to animals which bring forth
their young alive.
=Zoophyte= (_zō´ō-fīt_).--Applied to the animals which resemble plants,
such as the sea-anemones, sponges, etc.