GLOSSARY 
OF 
TERMS USED IN CONCHOLOGY. 
Aculeated, prickly or ending in a 
prickle. 
Acuminated, terminated in a sharp 
point. 
Annulated, divided into rings. 
Anterfor, the cartilage side of the 
hinge in bivalves. 
Antiquated, longitudinally grooved, 
but interrupted by transverse fur- 
rows, as if the shell had acquired 
new growth at each groove. 
Aperture, the mouth of Univalves. 
Apex, the top of a spire. 
Approximating, approaching near to, 
or near together. 
Arcuated, arched. 
Area, a space. 
Attenuated, becoming more slender. 
Auriculated, with ear-like appen- 
dages. 
Back, the part opposite the mouth 
in Univalves. 
Base, in Bivalves and Multivalves 
the portion which may be affixed 
to a rock—in Univalves the oppo- 
site extremity to the apex. 
Beak, beaked, having the base of a 
shell elongated and attenuated like 
the beak of a bird. 
Beard, the hairy cords by which cer- 
tain Bivalves adhere to rocks, 
&c. 
Bi prefixed to a word signifies two. 
Bifid, cleft. 
Bivalve, consisting of two plates or 
pieces. 
Body whorl, the last-formed whorl 
of Univalves. 
Byssus, the beard. 
Breadth, the distance between the 
extreme sides. 
Calcareous, like lime. 
Callosity, callus, a thick excrescence. 
Canal, the prolongation of the mouth 
in a kind of gutter, as in Murex, &c. 
Canaliculated, channelled or grooved. 
Cancellated, longitudinally and 
transversely ribbed. 
Cardinal teeth, the central ones, as 
distinguished from the lateral or 
side teeth. 
Carinated, having a prominence like 
a boat’s keel. 
Cartilage, the ligament. 
Chambered, having the interior di- 
vided into compartments. 
Ciliated, edged with hairs like an 
eyelid. 
Cinereous, ash colour. 
Clavate, club-shaped. 
