GLOSSABY. 369 



Oere — 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. 



Ghiasma — 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. 



ClamMorial — Pertaining to or like the Cla/matores. 



CUmide — The collar bone. 



G(Bcal — Of the form of a blind sac. 



Cmaum — ^An appendage of the form of a blind sac, connected with 

 the alimentary canal. 



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



Compressed — Flattened laterally. 



Condyle — ^Articulating surface of a bone. 



Conirostral — Said of a bill like that of a Sparrow; conical in 

 form and with the commissure angulated. 



Costal folds — Folds 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. 



Grissum — ^The under tail coverts, in birds. 



Ctenoid — Rough-edged, said of scales when the posterior margin 

 is minutely spinous or pectinated. 



Culmen — The middle line or ridge of the upper mandible in birds. 



Cuneate — Wedge-shaped; said of a bird's tail when the middle 

 feathers are longest and the rest regularly shorter. 



Cycloid — Smooth-edged ; said of scales not ctenoid, but concen- 

 trically striate. 



Deciduous — ^Temporary, falling oflT. 



Deeurved — Curved downward. 



Dentate — With tooth-like notches. 



BentivDstral — Having the bill notched near its tip. 



Depressed — Flattened vertically. 



Depth — Vertical diameter (usually of the body of fishes.) 



Dermal — Pertaining to the skin. 



Diaphanous — ^Translucent. 



Digitigrade — ^Walking on the toes, like a dog. 



Dorsal — ^Pertaining to the back. 

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