AVIFAUNA OF LAYSAN, ETC. 



12<) 



24. OREOMYZA PERKINS I, s P . nov. 



Adult male. Above light olive-green (Ridgway, Norn. Colours, pi. x. no. 18), brighter on the 

 rump. Quills blaek, edged with oil-green ; tail-feathers dark brown, edged with oil- 

 green. Below olive-yellow; vent greenish white. Thighs dirty white. Under wing- 

 coverts white, with a yellow tinge ; lores black. Iris dark brown. Legs and feet 

 greyish brown. Soles of feet yellowish flesh-colour. Upper mandible dark brown, with 

 paler base; lower mandible grey. Total length about 5'5 inches, wing 2 6, tail 17, 

 tarsus 85, culmen 63. 



One male, Puulehua, Hawaii, September 25th, 1891. 



This remarkable specimen has a long but straight bill; the nostrils are covered by an 

 operculum, which, however, leaves a minute space at the lower margin open ; the second 

 primary is about one-tenth of an inch shorter than the third ; the third, fourth, and fifth are 

 nearly equal, but the fourth is a trifle longer. The coloration is that of Chlorodrepanis 

 virens. The bird thus occupies a somewhat intermediate position between Oreomyza and 

 Chlorodrepanis, and it might be a hybrid between Oreomyza mana and Chlorodrepanis 

 virens ; but, as Oreomyza parva of Kauai occupies a similarly intermediate position between 

 the genera Oreomyza and Chlorodrepanis, I think it is quite possible that it is a good species, 

 and I have much pleasure in naming it after Mr. Perkins, who has done such very good 

 work on the Hawaiian Islands in furthering our knowledge of their biology. 



