BIRDS OF ETHIOPIA AND KENYA COLONY 425 



LOPHOCEROS JACKSONI Ogilvie-Grant 



Lophoceros jacksoni Ogilvie-Grant, Ibis, 1891, p. 127 : Turkwell, Suk. 



Specimens collected: 



Male, Sagon Kiver, Ethiopia, June 5, 1912. 



Female, Bodessa, Ethiopia, June 1, 1912. 



Male and female, Mar Mora, Ethiopia, June 14, 1912. 



Two males, Endoto Mountains, Kenya Colony, June 20 to July 23, 

 1912. 



Male, Tana River below camp 3, Kenya Colonj^, August 16, 1912. 



Male, Thika River at Boulder Hill, Kenya Colony, August 28, 

 1912. 



Soft parts. — Adult female, bill all black, iris yellowish brown; 

 subadult male, bill dusky brown with a slightly horn-holored tip and 

 base shading to yellowish. 



The differences between jacksoni and deckeni have been dealt with 

 under the latter species, and the distribution of the former has 

 already been shown to be more or less coincident with that of the 

 latter, except, perhaps in eastern Uganda, where deckeni has not 

 been found as yet. 



Although the evidence produced by Claude Grant ^® and by 

 Rothschild "^ indicates the specific validity of jacksoni, yet it is 

 somewhat strange that of the eight specimens listed above, not one 

 is a very old adult. This is all the more significant when it is remem- 

 bered that Erlanger and Zedlitz and others considered jacksoni the 

 young of deckeni. Yet it looks as though there really are two 

 species. Because of the similarity in the immature stages, it may 

 be noted that identification is difficult, and is more a matter of 

 opinion than of fact in some cases. The size measurements of the 

 two forms are similar. 



All the specimens are in worn plumage, but are not molting. 



In its general habits (as far as known) jacksoni agrees with 

 deckeni. 



Both this species and L. deckeni were seen in numbers almost 

 every day during the journey from Endoto Mountains to the Athi 

 River, but, as Mearns did not distinguish between them in his notes, 

 it is impossible to identify his records in any one case. 



LOPHOCEROS MELANOLEUCOS GELOENSIS Neumann 



Lophoceros melanoleucos geloensis Neumann, Journ. f. Ornith., 1905, p. 187: 

 Schekho on the Upper Gelo River, southwest Ethiopia. 



Specimens collected: 



Two males and one "male" (female?), Meru Forest, near Mount 

 Kenia, Kenya Colony, August 10, 1912. 



'•Ibis, 1915, p. 275. 



■"Ann. Mag. Nat. Hist., ser. 9, vol. 14, 1924, p. 317. 



