c'. Angle of mouth feathered 8. Gazzola, p. 47. 



(P. Angle of mouth bare 9. MicnocoKAX, p. 48. 



rf*. Bill anomalous, the gonvs ascend- 

 ing at a much greater angle to- 

 wards the tip than the apical cuiTe 



of the culmen 10. Physocorax, p. 50. 



/'". Nasal bristles shorter, the distance 

 between their tips and the tip of 

 the upper mandible much greater 

 than the distance between the eye 

 and the tips of the nasal bristles, 

 tr*. Face and region of the eye bare . . 11. Gymnocohax, p. 50. 

 f*. Face and region of the eye feathered, 

 e'. Bill compressed, strongly curved ; 

 wing having the innermost se- 

 condaries longer than the ordi- 

 nary or outer secondary quills . 12. Maceocohax, p. 51. 

 /*. Bill conical and nearly straight ; 

 wing having the innermost se- 

 condaries gradually shorter than 



the outer ones 13. Nucifhaga, p. 52. 



b'. Nostrils bai-e 14. Strepeea, p. 57. 



Wings short, the distance between the tips of 

 the quills and the tips of the tail-feathers 

 always much more than the length of the 

 tar.sus. 

 c'. Tan very long, and strongly graduated, the 

 two centre feathers exceeding the outer 

 one by more than half, generally by two 

 thirds of the length of the wing. 

 d". Head not ornamented with a long and 

 distinct crest. 

 g"'. Eye without a wattled ring. 

 g*. tu'st primary sinuated and ending 



in a long pointed plimie 15. Pica, p. 62. 



A*. First primary normal. 

 ff^. Tail-feathers not inclined to be 

 spatidate at tips, being about the 

 same breadth for their whole 

 length, 

 c". BUI small and nearly straight, 

 Its depth at nostiils not ex- 

 ceeding the length of the 

 hind claw; nostrils densely 



feathered 16. Cyanopolius, p. 67. 



cp. Bill very stout and much 

 curved, much deeper at the 

 nostrils than the hind claw ; 

 nostrils not verj' densely 



feathered 17. Urocissa, p. 69. 



h''. Middle tail-feathers gradually 

 naiTo wing towards the tip, where 

 they are acumiiiate ; bill stout, 

 its length at base far exceeding 

 the length of the hind claw ; 

 nostrils not very thickly plumed 18. CryptoehinA;P.74. 



