17 
Genus 28. 
29. 
31. 
32. 
33. 
34. 
35. 
36. 
37. 
38. 
39. 
40. 
41 . 
of the United States . 
Sitta. Bill conic-subulate. 
Family Anthomyzr 
Trochilus. 
Family iEGiTHALT. 
Parus. 
Family Passerine 
Alauda. Bill conic-attenuated, entire : hind nail 
long, straightish. 
Embertza. Upper mandible coarctate, narrower 
than the lower. 
Tanagra Bill at base trigonal and somewhat 
depressed, slightly curved at tip : outer toe 
united at base to the middle one. 
Fringilla Bill perfectly conic, acute ; upper man- 
dible wider than the lower. 
Pyrrhula. Bill conic-convex, turgid ; upper 
mandible much curved at tip. 
Loxia. Mandibles crossing each other. 
Family Columbint. 
COLUMBA. 
ORDER GALLINiE. 
Family Gallinacei. 
Meleagris. Bill with a cere-like membrane : tarsi 
naked. 
Perdix. Bill bare: tarsi naked. 
Tetrao Bill covered at base with feathers : tarsi 
feathered. 
ORDER GRALLiE. 
Family Pressirostres. 
Charadrius Bill short, rounded, obtuse, some 
what turgid at tip : hind toe wanting or ex- 
ceedingly small. 
