of the United States. 
15 
ANALYTICAL TABLE 
OF THE NORTH AMERICAN GENERA. 
ORDER ACCIPITRES. 
Family Vulturinl 
Genus L Cathartes. 
Family Rapaces. 
2. Falco. Eyes lateral : cere obvious. 
3. Strix. Eyes in front : cere concealed. 
ORDER PASSERES. 
TRIBE I. SCANSORES. 
Family Psittacini. 
4. PsiTTACUS. 
Family Amphiboij. 
5. Coccyzus. 
Family Sagittilingues. 
0. Picus. 
TRIBE II. AMBULATORES. 
§ Feet gressorial. 
Family ANGULIROSTRES. 
7 . Alcedo. 
§§ Feet ambulatory. 
Family Gregarii. 
3. Sturnus. Bill straight, depressed, obtuse ; edges 
vertical. 
9. Icterus. Bill straight, compressed, acute ; edges 
inflexed. 
10. Quiscalus. Bill cultrate, bare. 
1 1 . Corvus. Bill cultrate, covered at base with seta- 
ceous incumbent feathers. 
