772 



into adipocire ; and this change he found 

 was expedited by exposure to running 

 water. 



ADIPOSE. Fatty ; as the adipose or cellular 

 membrane, containing the fat in its cells ; 

 the adipose ducts, &c. 



ADNATE. Adhering or growing together, 

 Applied to insects, when the under jaws 

 adhere to the lower lip through their whole 

 length. 



ADUNCOUS. Crooked. 



.32NEOUS. Resembling the metallic splen- 

 dour of brass. 



AERIAL. Inhabiting or frequenting the air. 



AERI DUCTS. Respiratory organs often fo- 

 liaceous, with which the sides of the ab- 

 domen, the tail, and sometimes the trunk 

 of aquatic larvse and pupae are often fur- 

 nished. 



AFFINITY. That tendency which different 

 species of matter have to unite and com- 

 bine with certain other bodies, and the 

 power that disposes them to continue in 

 combination. 



AGGLUTINATED. United by some viscous 

 fluid. 



AIGRETTE. A pointed tuft of feathers. 



AIR-BLADDER. An organ possessed by most 

 fishes, which gives to them the faculty of 

 increasing or diminishing their specific 

 gravity, and assists their powers of loco- 

 motion. 



AL^K. The wings of birds or insects. 



ALAR. Belonging to a wing. 



AI.ATK. ALATED. Winged ; a term applied 

 to the expanded lips of certain shells ; and 

 to the dilated sides of the thorax, &c. in 

 some insects. 



ALBINISM. The change from a dark colour 

 to perfect whiteness, which (from some 

 accidental cause) is occasionally seen in 

 the fur of quadrupeds and in the plumage 

 of birds. 



ALBUMINOUS. Consisting of albumen, or 

 the substance which forms the white of an 

 egg- 



ALIFORM. Shaped like a wing ; in form and 

 substance like the membranous wings of 

 insects. 



ALIMENTARY CANAL. The great duct or 

 intestine, in animal bodies, by which the 

 aliment (food) is conveyed through the 

 body, and the useless parts evacuated. 



ALIPED. A wing-footed animal, or one 

 whose toes are connected by a membrane, 

 and which serve for wings ; as the bat. 



ALLIACEOUS. Having a scent of garlic. 



ALTIVOLANT. Flying high in the air. 



ALULA. A little wing. 



ALULA SPURIA. The bastard wing: three 

 or five quill-like feathers, placed at a small 

 joint rising at the middle part of the wing. 



ALVEOLAR. Containing hollow cells or 

 sockets. 



ALVEOLATE. Deeply pitted, so as to re- 

 semble a honeycomb. 



AMBIENT. When the prothorax (in insects) 

 is so large as to receive the whole head. 



AMBITUS. The circumference or outline. 



AMBULACRA. The perforated series of plates 

 in the shell of the echinus or sea-urchin. 



AMBULATORY. Peculiarly well-formed for 

 walking. 



AMETABOLIC. A term applied to those in- 

 sects which do not undergo any metamor- 

 phosis. 

 AMETHYSTINE. The purple splendour of 



the amethyst. 



AMOKPHA. Insects in which the pupa is 

 unprovided either with a mouth or the 

 organs of locomotion, and bears no re- 

 semblance to the perfect state ; instanced 

 in Lepidoptera and Diptera. 



AMORPHOUS. Having no determinate form ; 

 devoid of regular form. 



AMPHIPODAL. Having feet adapted both for 

 swimming and walking. 



AMPLECTED. When the head of an insect 

 is received into a sinus of the thorax. 



AMPLIATE. Disproportionately wide at the 

 end. 



ANADROMOUS. A term in ichthyology, to 

 denote such fishes ag have their stated 

 periods of going from the fresh water to 

 the salt, and again returning ; of which 

 kind is the Salmon, and many of the 

 Trout family. The method Nature seems 

 to have decreed is as follows : they are 

 spawned in fresh-water rivers, where they 

 continue till they arrive at a proper size, 

 and acquire some strength : after which 

 they seek the salt water, in order to feed 

 more at large, and attain their full growth. 

 They then return to the rivers to deposit 

 their spawn, that their young brood may 

 have the same advantages of spending 

 their adolescent state in more security 

 when they again revisit the sea. 



A.NAL. Pertaining to the anus : the anal fin 

 is that between the vent and the tail. 



ANALOGUE. A part or organ in one animal, 

 which has the same function in another 

 part or organ in a different animal. 



ANALOGOUS. Bearing some proportion or 

 resemblance. 



ANASTOMOSE. When the mouths of two 

 vessels unite or blend together. 



ANATIFEROUS. Producing ducks. 



ANATOMY. The art of scientifically separa- 

 ting the different parts of an animal body, 

 to discover their situation, structure, and 

 economy. Comparative anatomy is that 

 branch of anatomy which treats of the 

 anatomy of other animals than man, with 

 a view to compare their structure with that 

 of human beings, and thus to illustrate 

 the animal functions. 



ANDROGYNOUS. Hermaphroditical, or the 

 combination of male and female organs 

 in the same body. 



ANENTEROUS. Pertaining to those infuso- 

 rial animalculae which have no intestinal 

 canal. 



ANEUROSE. Applied to the wings of insects 

 that have no nervures besides the mar- 

 ginal ones. 



ANGUILLIFORM. A term applied to a very 

 large class of fishes, which are soft and 

 lubricous, like the eel, and destitute of 

 scales. Most of them are long and slender- 

 bodied, but thev do not all correspond in 

 other less essential points. 



AJTGULOSO-UNDULATE. When lines, fasciae, 

 &c. go in a zig-zag direction, or with al- 

 ternate acute sinuses. 



ANGUSTATE. Disproportionately narrow in 



