28 BULLETIN 99, UNITED STATES NATIONAL MUSEUM. 
to show considerable ochraceous. Older specimens, but with the 
molar teeth not yet in place, are colored essentially like the adults. 
-The Rainey Expedition collected a large series of specimens from Kaimosi, the head 
of the Lukosa River on the lower slopes of the Nandi Escarpment and the Kakumega 
forest. This material is now in the National Museum. It represents the eastern 
limits of the ascanius group of Lasiopyga in Africa which has not previously been 
reported so far east as British East Africa. They were found abundant in the dense 
forests where they lived in proximity to colobus and the large gray forest monkeys, 
Lasiopyga leucampaz neumanni. When alarmed they uttered a peculiar, low, chirping, 
bird-like note very unlike the barking calls of other African monkeys.? 
The type-specimen of Lénnberg’s Cercopithecus ascanius orientalis 
is virtually a topotype of Lastopyga ascanius kaimose. The locality, 
Kampi Simba, is only a short distance from the upper Lukosa River, 
where Heller obtained his type series, and as the collector of Lénn- 
berg’s specimen stated that although the specimen was prepared at 
Kampi Simba it was doubtless obtained in some of the forests at 
some little distance from that place, it is likely that it came from the 
exact region of Heller’s specimens, the only locality in British East 
Africa where the species is known certainly to occur. Doctor 
Lénnberg overlooked Heller’s name in describing his new form. 
LASIOPYGA LEUCAMPYX CARRUTHERSI (Pocock). 
1907. [Cercopithecus leucampyz] subsp. carruthersi Pocock, Proc. Zool. Soc. Lon- 
don, p. 689. (Ruwenzori, east side, 10,000 feet, Uganda; type in 
British Museum.) 
1909. Cercopithecus princeps Extior, Ann. and Mag. Nat. Hist., ser. 8, vol. 4, 
p.304. September. (Mpanga Forest, Uganda; type in British Museum. ) 
Specimens.—Sixteen, as follows: 
Ueanpa: Budonga Forest, 16, including one odd skull (Raven). 
LASIOPYGA LEUCAMPYX NEUMANNI (Matschie). 
1905. Cercopithecus neumanni Marscuie, Sitz.-ber. Ges. nat. Freunde Berlin, 
1905, p. 266. (Kwa Kitoto, North Kavirondo, British East Africa; type 
in Berlin Museum.) 
Specumens.—Nine, as follows: 
British East Arrica: Kakumega, 3 (Heller); Lukosa River, 6 
(Heller). 
No specimens of this group of guenons were collected by the Smith- 
sonian African Expedition, but the Rainey Expedition secured this 
fine series in the Kakumega Forest. 
1 Heller, Smithsonian Misc. Coll., vol. 61, No. 17, p. 10. Oct. 21, 1913. 
