830 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvni. 



culmen without cere, 11); tarsus, 65; middle toe, 38; middle claw, 15; 

 hind claw, 23 mm. 



This evideutl}^ new form of an interesting yet rather difficult group 

 differs from Adur tachiro and its various subspecies most noticeably 

 in its much larger size, striking-ly stouter feet and tarsi, lack of white 

 markings on the middle tail-feathers, and rather widei" white inter- 

 spaces of the ventral surface. Doctor Keichenow has recently reduced 

 Asticr spar's imfamiatus to a subspecies of Astur tacJiiro,'^ but he prob- 

 ably errs in so doing, since the former, by his own showing,'^ occurs 

 almost exclusively within the known range of the latter; the ditfer- 

 ences are such as would appear to be specilic rather than subspecific; 

 and furthermore, there is no evidence of intergi-adation. The dis- 

 covery of the present new form, oidy a short distance across the 

 mountain from Moschi, where Mr. Neumann found what he consid- 

 ered typical ^1. tachiro^'^ is added proof of the distinctness of the two 

 species. 



Doctor Ab})ott obtained only the single specimen above described, 

 and the l)ird appears to be rare. He notes the native name (Ki Taveta) 

 as ^'Kinui." 



BUTEO AUGUR (Riippell). 



Falco {Buteo) augur Ruppell, Neue Wirb. Faun. Abyss., Vogel, 1835, p. 38, 

 pi. XVI (Abyssinia). 



Four specimens from Mount Kilimanjaro, at 4,000 and 5,000 feet. 

 The three adults all have the lower tail-coverts more or less tipped 

 with tawny. "Iris brown; feet and cere yellow; bill horn blue; 

 Native name ' giahm \ Length (of male) 20i inches [514 mm.]." An 

 immature female just passing into the adult plumage has still the 

 brown, light-barred tail and the large spots on the breast, but many 

 black feathers are appearing in the plumage of the upper parts, while 

 the chin and throat are streaked with black as in the adult; the pos- 

 terior lower surface is strongly tinged with tawn}', the thighs and 

 crissum somewhat mottled with the same; the wings are nuich less 

 blackish than those of the adult, and most of their conspicuous grayish 

 white markings are, particularly on the outei- webs, either absent or 

 obscured. 



BUTEO DESERTORUM (Daudin). 



Falco desertoruniDAVDiN , Traite d'Orn., II, 1800, p. 162 (based on Levaillant; 

 no locality given, but probably southern Africa). 



One immature female from Mount Kilimanjaro, 5,000 feet, Septem- 

 ber 1, 1889. This individual is not pure white below, but is tinged 

 with buff on breast, sides, and abdomen, and with ochraceous on flags 

 and crissum. "Iris straw color; cere light green." 



« Vogel Africas, I, 1901, p. 554. '>Idem, pp. 552-554. t' Journ. f. Ornith. , 1899, p. 42. 



