XXXIV. SYNOPSIS. 



* C. Olor, Steph. v. 2, p. 275 

 C. immutabilis, Yarr. 



Gen. 86. ANAS. Bill depressed, broad towards the tip ; 

 the edges of both mandibles furnished with pectiftated 

 lamellae: nostrils small, oval, placed near the base: legs 

 short, and feathered to the heel; three toes before, one 

 behind, the latter free: wings moderate; second quill gene- 

 rally longest. 



* Hind toe without a membrane. 



A. rutila, Pallas. 

 A. Tadorna, Linn. 



* A. moschata, Linn. 



A. Boschas, Linn. - \ 



A. Strepera, Linn. 

 A. acuta, Linn. 

 A. Penelope, Linn. 

 A. Americana, Wils. 

 A. glocitans, Pall. 

 A. Querquedula, Linn. 

 A. Crecca, Linn. 

 A. Clypeata, Linn. 

 '* * Hind toe with a lobated membrane. 



A. mollissima, Linn. - v. 2, p. 319 



A. spectabilis, Linn. - v. 2, p. 324 



A. perspicillata, Linn. 



A. fusca, Linn. v. 2, p. 327 



A. nigra, Linn. v. 2, p. 329 



A. rufina, Pall. 



A. Marila, Linn. v. 2, p. 332 



A. ferina, Linn. v. 2, p. 334 



A. leucophthalmos, Bechst. - v. 2, p. 337 



A. Fuligula, Linn. v. 2, p. 339 



A. dispar, Gmel. 



A. histrionica, Linn. v. 2, p. 341 



A. Clangula, Linn. - v. 2, p. 343 



A. glacialis, Linn. - v. 2, p. 345 



Gen. 8?. MERGUS. Bill as long as, or longer than 

 the head, straight, slender, forming an elongated and almost 

 a cylindrical cone; upper mandible tapering towards the tip, 

 which is furnished with a strong hooked nail; edges of both 

 mandibles set with sharp teeth directed backwards: nostrils 



