Birds of Indiana. 589 



c^. Bill broad; lower maiifiihle with a very distinct^series oi lamella; along 

 the side, besides the series along the upper edge. 



Subfamily Anatin^e. 

 f'. Hind toe without lobe or flap. 



P . Bill not spoon shaped ; scarcely widened towards the tip. 

 g'^. Tail feathers narrow, rather pointed ;• no orest. 



/('. Tail not pointed, its middle feathers not unusually long in 

 male; speculum green, violet or white. Anas. 15 



//■'.Tail pointed; its middle feathers much lengthened in the 

 male; female with tail much shorter; speculum violet. 



Dafila. 17 

 g'^. Tail feathers broa<l, rounded at tip ; male with a hi^h crest. 



A IX. 18 

 p. Bill spoon shaped, narrow at base, very broad towards tip. 



Spatula. 16 

 e^. Hind toe with a broad lobe or Hap. 



i'. Tail feathers with bases scarcely concealed by short coverts; 

 tail feathers narrow and stifT. 



;■'. Outer toe longer than middle toe ; nail of bill small, bent 

 backward beneath the tip of upper mandible. 



Erismatura. 24 

 p. Outer toe shorter than middle toe; mail of bill normal. 



XOMONYX. 



i*. Tail feathers with their bases well hidden by their coverts. 

 k^ . Feathering on lores or forehead not reaching beyond pos- 

 terior border of nostril. 

 U. Graduation of tail less than length of bill from nostril. 



Aythya. 19 

 /2. Graduation of tail moiethan length of bill from nostril, 

 m'. Bill ordinary, not swollen; having no appendage 

 on edge at base of upper mandible. 

 n'. Wing less than seven inches long; eyes brown. 



Chariton ETTA. 21 

 w^. Wing over seven inches long. 



o\ Nostril in middle of bill, or nearer tip than 

 base; eyes yellow. Glaucionetta. 20 



0-. Nostril nearer the base than tip of bill; male 

 with long tail. Clangula. 22 



m-. Bill not ordinary, swollen or else appendaged at 

 base, or on sides, 

 pi. Bill swollen at base. Oidemia. 23 



jo^. Bill not swollen at base, but appendaged. 

 q'^. Bill appendaged with a lobe on each side 

 near base; speculum violet. 



Histrionicus. 

 (/^. Bill with a leathery expansion on sides of 

 upper mandible; cheeks bristly ; speculum 

 white. Camptolaimtjs. 



k*. Feathering on forehead or lores extending to or beyond 

 nostril; bill swollen at base. Somateria. 



