370 GLOSSARY. 



Dorsal fin — The fin on the back of fishes. 



Ema/rginate — Slightly forked or notched at the tip, or sometimes 



abruptly narrowed (said of quills.) 

 Bndoskeleton — ^The skeleton proper — the iimer bony framework of 



the body. 

 Mpignathms — Having the bill hooked. 

 Erectile — Susceptible of being raised or erected. 

 Even — {Tail) having all the feathers of equal length. 

 ExosJceleton — Hard parts on the surface of the body. 

 Exserted — Projecting beyond th.e general level. 

 Facial — Pertaining to the face. 

 Falcate — Scythe-shaped ; long, narrow, and curved. 

 Falciform — Curved, like a scythe. 

 Fasciated — ^With broad colored bands. 



Fa/ana — The animals inhabiting any region, taken collectively. 

 Fernigineous — Eusty red. 

 Fibula — The small outer leg bone. 

 Filament — ^Any slender or thread-like structure. 

 Filiform — Thread-form. 

 Fissirostral — Having the bill very deeply cleft, beyond the base of 



the horny part, as in the Swallows. 

 ForeTiead—Froatal curve of head. 

 Foramen — K hole or opening. 

 Forficate — Deeply forked. 



Fosam — The grooves in which the nostrils of many birds open. 

 Fossorial — Adapted for digging. 

 Fulcra — Rudimentary spine-like scales extending up the fins of 



some fishes. 

 Fuliginous — Sooty or smoky brown. 

 Fv/rcate — Forked. 

 Fuscous — Dark brown. 

 Fusiform — Spindle-shaped ; tapering toward both ends but rather 



more abruptly forward. 

 Qwpe — Opening of the mouth. 



Ganoid — Scales or plates of bone covered by enamel. 

 Oastrosteges — Band-like plates along the belly of a serpent. 

 Gills — Organs for breathing the air contained in water. 

 Gill openings — Openings leading to or from the branchise. 

 Gill rakers — ^A series of structures like comb-teeth in the mouth 



of some fishes. 



