•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 ; ohcordate, 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. 

 Cwieate, 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 midi-iff, which divides the upper cavity of the 



body from the lower. 

 Dichotomou-i, dividing regularly in pairs. 



