Canaliculate. Resembling a canal, as the deep sutures in some shells. 

 Cancellated. Formed of cross-bars, as the longitudinal and spiral lines which 



cross in some shells. 



Cardiac pouch. Containing the heart and placed near the umbones of the shell. 

 Carinate. Keeled. 

 Carnivorous. Feeding on animals. 

 Cartilaginous. Like cartilage. 

 Caudal. Tail-like, or with a tail-like appendage. 

 Cellular. Made up of cells. 

 Cerebral. Pertaining to the brain. 

 Channeled. Grooved or formed like a channel. 

 Glutinous. Formed of chitin, as the raduke of snails. 



Chromatophores. The pigment spots on the body of squids and devil fishes. 

 Ciliary. By means of cilia. 

 Ciliated. Having cilia. 



Cilium (plural cilia). A lash ; used to designate the hairs on the mantle, gills, etc. 

 Cirrated. Having movable hairs, as the siphons of Unio. 

 Clavate. Club-shaped. 



Cloacal. Referring to the upper or dorsal siphon in Pelecypods. 

 Coarctate. Pressed together, narrowed. 



Compressed. Flattened out, or pressed together, as some bivalves. 

 Concave. Excavated, hollowed out. 

 Concentric. From the same center, as the lines of growth on Sphagnum, which 



are parallel with the mnbo. 

 Confluent. To run together, or into something else, as the muscle scars of some 



Unios. 



Congener. Belonging to the same group. 

 Conic. Shaped like a cone. 

 Connective. A part connecting two other parts, as a muscle connecting two parts 



of the body, or a nerve connecting two ganglia. 

 Constricted. Narrowed. 



Contractile. Capable of being contracted or drawn in, as the tentacle of a snail. 

 Convex. Bulged out, as the whorls of some snails. 

 Convoluted. Rolled together. 

 Cordate. Heart-shaped. 



Corneous. Horn-like, as the opercula of some mollusks. 

 Corrugated. Roughened by wrinkles, as the shells of some Unios. 

 Costate. Having rib-like ridges. 

 Crenulate. Wrinkled on the edges. 

 Crescentic. Like a crescent. 

 Cylindrical. Like a cylinder. 

 Deciduous. Falling off; applied to the parts of a shell which are not permanent, 



as the apex in some snails. 



Decorticated. Peeled or stripped off, as the epidermis in some shells. 



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