GLOSSAET 



OB" THE 



Principal Technical Terms 



USED IN THIS WORK.* 



Abdomen — Belly. 



Abdominal — Pertaining to the belly — said ot the ventral flns of 

 fishes when inserted consideraWy behind the pectorals, away 

 from the shoulder girdle. 



Abortive — Remaining or becoming imperfect. 



Acuminate — Tapering gradually to a point. 



Acute — Sharp-pointed. 



Adipose Jin — A peculiar, fleshy, fin-like projection on the backs 

 of Salmons, Cat Fishes, etc., behind the dorsal fin. 



Air bladder — ^A sac filled with air, lying beneath the back-bone at 

 fishes, corresponding to the lungs of the higher vertebrates. 



Allantois — Ajn organ of the embryo. 



Altriees — Birds reared in the nest and fed by the parents. 



AUricial — Having the nature of Altriees. 



Alula — ^The feathers attached to the " thumb " of a bird. 



Aheolar sv/rface—A portion of the jaw of a turtle, where the 

 teeth-socketa (alveola) might be expected to be. 



Amnion — An organ of the embryo. 



Am/phiealian — Biconcave — said of vertebrse. 



AriMd/romous—^&idL of marine fishes which run up rivers to spawn. 



Anal — Pertaining to the anus or vent. 



Anal fin — The fin on the median line, behind the vent, in fishes. 



Anal plate — The plate, immediately in front of the vent, In ser- 

 pents. 



• In the preparation of this Glossary, the author has largely drawn Irom 

 Dr. Coues' " Glossary of the Teclinlcal Terms used In Descriptive Ornithology," 

 in Balrd, Brewer and Kidgway's History of North American Birds, Vol. III. 

 pp. 535—560. 



(367) 



