NEW SPECIES OF BIRDS. 17 



Habitat: Negros, Masbate. It will doubtless eventually be dis- 

 covered in Panay also. 



14. Aethopyga arolasi sp. nov. 



Adult male: Slightly larger than Aethopyga bella. Upper sur- 

 face as in that species. Fore-breast much more broadly streaked 

 with orange. Abdomen and under tail-coverts light lemon yellow, 

 not white. 



Adult female: Above uniform olive green. Does not show the 

 bright yellow rump of Aethopyga bella. Under surface inclin 

 ing to white, but breast, abdomen and under tail-coverts washed 

 with light lemon yellow. 



Average measurements from ten males: Length, 3.44 inches. 

 Culmen, .70. Wing, 1.59. Tail, 1.30. Tarsus, .46. 



Prom four females: Length, 3.26 inches. Culmen, .63. Wing, 

 1.59. Tail, .99. Tarsus, .49. 



Habitat: Tawi Tawi and Sulu. 



We have named this beautiful sun-bird in honor of Brigadier Gen- 

 eral Juan Arolas, for many years governor of the Sulu group, to 

 whom we are indebted for much personal kindness and for assis- 

 tance without which our work in Sulu would have been almost im- 

 possible. 



15. Aethopyga ho nit a sp. nov. 



Above as in Aethopyga arolasi except that the rump is orange 

 yellow instead of sulphur yellow and the metallic spot on forehead 

 is violet instead of metallic green when held away from the light. 

 Chin, throat and fore-breast bright orange yellow, thickly streaked 

 with deep orange red. Mustachial line, sides of face and ear- patch 

 as in Aethopyga arolasi. Lower breast, flanks, abdomen and under 

 tail coverts white, distinctly washed with lemon yellow. Under 

 wing-coverts and inner webs of quills white. Under surface of tail 

 black, tips of some of the feathers grey. 



Adult female: Above olive green, nearly brown on forehead and 

 crown. Rump bright yellow as in Aethopyga bella. Tail and quills 

 brownish black washed with olive brown. Sides of face and ear- 

 coverts ashy grey. Sides of neck olive green. Chin and throat 

 nearly white. Pore breast much darker. Hind-breast, abdomen, 

 flanks and under tail coverts whitish, strongly washed with pale 

 yellow. Under wing-coverts, axillaries and inner webs of quills 

 white. 



Pour males measure as follows: Length, 3.72 inches. Culmen, 

 .72. Wing, 1.72. Tail, 1.28. Tarsus, .56. 



