EAST AFRICAN" MAMMALS IN NATIONAL MUSEUM. Ill 



Breeding records noted on specimen labels are as follows: Nyeri, 

 September 16, two large embryos; Aberdare Mountains, October 9, 

 one and two large embryos^. 



Common in Rift Valley, on the top of the Aberdares, and in the Kenia forest. Go 

 up to timber line, but are not found in the deep forest, save about the edges of the 

 streams. Very fond of brush. Do not go out on the grassy plains. Usually, but 

 not strictly, nocturnal; and in the cold, foggy uplands, as on the Aberdares, become 

 diurnal.' 



LOPHUROMYS AQUILUS MARGARETT^ Heller. 



Plate 30. 



1912. Lophuromys aquilus margarettx Heller, Smithsonian Misc. Coll., vol. 59, 

 No. 16, p. 7, July 5. (Mount Gargues, Mathews Range, British East 

 Africa; type in U. S. Nat. Mus.) 



Specimens. — ^Twenty-seven, including 6 in alcohol, as follows: 



British East Africa: Mount Gargues (Heller). 



This well marked form is chiefly conspicuous for its dark coloration 

 and the absence of speckling on the lower back and rump. The 

 skulls average smaller then in true aquilus and the tail is relatively 

 longer. 



See measurements, page 109. 



LOPHUROMYS ANSORGEI ANSORGEI de Winton. 



1896. Lophuromys ansorgei de Winton, Proc. Zool. Soc. London, 1896, p. 607. 



(Mumia's, Kavirondo, British East Africa; type in British Museum.) 

 1910. Lophuromys ansorgei Roosevelt, African Game Trails, Amer. ed., p. 472; 



London ed., p. 484. 



Specimens. — Thirty, from localities as follows: 



Uganda: Butiaba, 3, including 2 in alcohol (Loring); Hoima, 3, 

 including 2 in alcohol (Loring) ; Kabula Mulu'o, 1 (Loring) ; Kikonda, 

 1 in alcohol (Loring) ; Kisingo, 1 odd skull (Loring) ; Lialo, 1 (Loring) ; 

 Mnyouri Jardin, 1 (Loring). 



British East Africa: Kaimosi, 1 (Heller); Kibabe, Kisumu, 3 in 

 alcohol (Heller); Kisumu, 13 (Heller); Nzoia River, Guas Ngishu 

 Plateau, 2 (Heller). 



There is considerable difference in color between the series from 

 Kisumu and Kaimosi, and those from other localities. Just what this 

 means it is impossible to decide without more material. The Kisumu 

 skins are very much like the colored plate of the type specimen oi 

 ansorgei, while those from a point on the Nzoia River equally near the 

 type locality are considerably lighter in color, with reddish sides and 

 a deeper colored belly. All of the Uganda skins are much like the 

 Nzoia River specimens in color, and differ from the figure of the type 

 and from the Kisumu skins by their lighter colored flanks. There 

 appear to be some slight skull differences between the Kisumu speci- 

 mens and the Uganda and Nzoia River material ; but there are hardly 



' Roosevelt and Heller, Afr. Game Trails, Appendix B, Amer. ed., p. 477. 1910. 



