MUSCICAPID^. 



V. Second primary very much shorter than 

 fifth. 

 c". Frontal feathers of ordinary structure, 

 not concealing the nostrils. 

 a'". Rictal bristles short and few in 

 number, generally less than six. 

 a 4 . Sexes different. 



a '. In both sexes base of tail white, 

 upper tail-coverts black, upper 

 plumage brown or rufescent, 



never blue nor black Siphia, p. 7. 



b'\ Males with whole upper plu- 

 mage blue or black ; lower 

 plumage never entirely blue 

 or green. Females brown or 

 rufescent above, never com- 

 bined with black upper tail- 

 coverts and white on tail. 

 a 6 . Bill wide at base and strong. Cyornis, p. 11. 

 I 6 . Bill narrow throughout, and 



feeble Nitidula, p. 27. 



c 5 . Both sexes with the entire 

 plumage suffused with blue 



or green Stoparola, p. 27. 



6*. Sexes alike ; plumage plain brown 

 or rufous throughout. 

 d s . First primary never less than 

 half second. 

 e 8 . Bill laterally compressed ; 



lower mandible pale Muscitrea, p. 30. 



d b . Bill flattened ; lower man- 

 dible dark Anthipes, p. 31. 



e 5 . First primary much less than 



half second Alseonax, p. 34. 



//". Bictal bristles very long and nume- 

 rous, about ten on each side. 

 c 4 . Tail much rounded; first primary 



much longer than half second . . Ochromela, p. 37. 

 d % . Tail quite even ; first primary 



much less than half second .... Culicicapa, p. 38. 

 d" . Frontal feathers lengthened and very 

 dense, concealing the nostrils. 

 c". Bill carinated and narrow; both 



sexes with a brilliant neck-spot . . Niltava, p. 39. 

 d'". Bill broad and flattened ; no neck- 

 spot in either sex Piiilentoma, p. 42. 



b Tail as long as, or longer than, wing. 



c . Head crested Terpsiphone, p. 44. 



d'. Head not crested. 



e". Tail about equal to wing. 



e'". Length of culmen about twice the 



breadth of bill at forehead Hypotiiymis, p. 48. 



f". Length of culmen about equal to 



breadth of bill at forehead C'iielidorhynx, p. 51. 



f". Tail considerably longer than wing . . Riiipidura, p. 52. 



b2 



