GLOSSARY 



OF TEEMS USED m COXCHOLOGY. 



A. 



Abbreviated, shortened, cut short. 

 Abdomen, the belly. 

 Aculeated, furnished with, or end- 

 ing in, prickles. 

 Acuminated, ending in a sharp 



point, sharp-pointed. 

 Adnate, adhering or growing to- 

 gether, adjoining. 

 Alated, winged, applied to the ex- 

 panded lip of the Sti'ombus genus, 

 <fcc. 



Ambitus, the circumference or out- 

 line of the valves. 



Annulated, formed of or divided 

 into distinct rings. 



Annulations, rings. 



Antiquated, longitudinally furrow- 

 ed, but interrupted by transverse 

 furro'ivs, as if the shell had ac- 

 quired new growth at each fur- 

 row. 



Aperture, the mouth or opening of 

 the sheU. 



Apex, the tip or point of the 

 spii-e. 



Apophysis, an excrescence. 



Approximating, approaching near 

 to, or near together. , 



Arcuated, bent in the form of an 

 arch. 



Arcuations, bendings, curvings. 



Area, the surface contained be- 

 tween lines or boiuidaries. 



Arenose, sandy. 



Areola, a smaU area or circle. 



Articulations, jimctures, or join- 

 ings. 



Attenuated, thin, slender. 



Auricled, having appendages like 

 ears. 



Auriform, ear-shaped. 



Auiited, eared, having ears as in 

 the scallops. 



B. 



Barb, filaments resembling a 



beard. 

 Base, in univalves, that part of 

 the shell by which it is affixed 

 to rocks, &c. or the opposite ex- 

 tremity to the apex. 

 Beak, the continuation of the body 

 of univalves in which the canal 

 is situate. 

 Beard, the filaments by which some 



bivalves adliere to rocks, (tc. 

 Bellying, distended in the middle. 

 Bi, prefijced to any word, signifies 



two. 

 Biangulated, having tw-o corners 



or anglesw 

 Bicuspid, having two points. 

 Bidentate, having two teeth. 

 Bifid, opening with a cleft. 

 Bifarious, parting in opposite di- 

 rections. 

 Bilabiate, furnished with two lips. 

 Bilobate, divided into two lobes. 

 Bimarginate, furnished with a 

 double margin as far as the lip. 

 Biradiate, having two rays. 

 Bivalve, consisting of two valves 



or pieces. 

 Blotched, spotted in an irregular 



way. 

 Blunt, obtuse, opposed to acute. 

 Borer, a piercer. 

 Brinded, streaked. 

 Bulging, gibbous, swollen out. 

 Bullate, of a blistered appearance. 

 Byssus, a beard, or tuft of fila- 

 ments, common in Mytilus and 

 Pinna. 



Calcareous, relating to lime, of a 

 limy natm-e. 



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