GLOSSARY. 3t)9 



Cere — Fleshy, cutaneous or membranous covering of the base of 

 the bill in many birds, particularly the Owls, Hawks, and 

 Parrots. 



Cervical — Pertaining to the neck. 



Chiasma — Crossing of the fibres of the optic nerve. 



Chin — The space between the forks of the lower jaw. 



Ciliated — Fringed with eye-lash-like projections. 



Cinereous — Ashy in color. 



Clamatorial — Pertaining to or like the Clamatores. 



Clavicle — The collar bone. 



Cacal — Of the form of a blind sac. 



C(£cu?n— An appendage of the form of a blind sac, connected with 

 the alimentary canal. 



Co7nmissure— The line on which the mandibles of a bird are closed. 



Compressed — Flattened laterally. 



Condyle — Articulating surface of a bone. 



Conirostral—^ii\([ of a bill like that of a Sparrow; conical in 

 form and with the commissure angulated. 



Costal folds— Fo\(\s of the skin (of a Salamander) showing the 

 position of the ribs. 



Crest— In birds, any lengthened feathers about the head; else- 

 where, any elevated or crest^like projection. 



Crissum — The under tail coverts, in birds. 



Ctenoid— 'Ro\\g\\-e(\gG(\.^ said of scales when the posterior margin 

 is minutely spinous or pectinated. 



Ciilmen—Th.e middle line or ridge of the upper mandible in birds. 



(7«/im^e— Wedge-shaped ; said of a bird's tail when the middle 

 feathers are longest and the rest regularly shorter. 



C^c/o/(f— Smooth-edged ; said of scales not ctenoid, but concen- 

 trically striate. 



Deciduous — Temporary, falling off. 



Decurved — Curved downward. 



Dentate— W\i\\ tooth-like notches. 



Dentirostral—R'AYing the bill notched near its tip. 



Depressed— Y\'AitQne({ vertically. 



Depth— YerWii^X diameter (usually of the body of fishes.) 



Dermal — Pertaining to the skin. 



Diaphanous — Translucent. 



Digitigrade — AValking on the toes, like a dog. 



Dorsal — Pertaining to the back. 

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