390 GLOSSARY. 
Cinereous, ash-coloured. 
Clavate, club-shaped. 
Concentric, having a common centre. 
Conoid, resembling a cone. 
Continuous, without interruption, prolonged. 
Contorted, twisted, or leaning on each other obliquely. 
Convex, swelling on the exterior surface into a spherical form. 
Convolute, twisted spirally. 
Cordate, heart-shaped at the base ; obcordate, heart-shaped at the 
apex. 
Coriaceous, of a leathery consistence. 
Corneous, horny. 
Corrugate, to wrinkle. 
Crenated, notched. 
Crescentic, like the moon in a state of increase. 
Cuneate, shaped like a wedge. 
Cylindrical, round and elongated. 
Cyst, a bag or tunic. 
Denticulated, set with small teeth. 
Deltoid, triangular. 
Dendritic, branched like a tree. 
Dextral, on the right. 
Diaphanous, clear and transparent. 
Diaphragm, the midriff, which divides the upper cavity of the 
body from the lower. 
Dichotomous, dividing regularly in pairs. 
