EAST AFRICAN MAMMALS IN NATIONAL MUSEUM. 31 
LASIOPYGA PYGERYTHRA CALLIDA Hollister. 
Plate 11. 
1910. Cercopithecus pygerythrus johnstoni Roosevett, African Game Trails, Amer. 
ed., pp. 474 and 481;' London ed., pp. 486 and 492.! (Part; not of Pocock.) 
1912. Lasiopyga pygerythra callida Houuister, Smithsonian Misc. Coll., vol. 59, 
No. 3, p. 1. March 2. (South side of Lake Naivasha, British East 
Africa; type in U. 8. National Museum.) 
1913. Lasiopyga callida Evtiot, Rey. Primates, vol. 2, p. 343. June 15. 
Specimens.—Fifteen, from localities as follows: 
Britiso East Arrica: Amala River, 5 (Heller); Kabalolot Hill, 
1 (Heller); Lake Naivasha, 7, including one large fetus in alcohol 
(Heller, Mearns); Telek River, Sotik, 2 (Heller). 
This well-marked form, as shown by material collected by the 
Rainey Expedition, ranges southward through the Sotik at least to 
the border of German East Africa. The type, an adult male, col- 
lected by Mearns, measured: Head and body, 525; tail vertebre, 610; 
hind foot, 140; ear from crown, 27. It weighed exactly 10 pounds. 
Doctor Mearns shot it from a group of seven, 60 feet high in a thorn 
tree. An adult female, collected by Heller at Lake Naivasha, meas- 
ured: Head and body, 420; tail vertebra, 515; hind foot, 120; ear, 30. 
It contained one large embryo. The stomach contents of this speci- 
men were identified as fruit of the yellow thorn tree. 
LASIOPYGA PYGERYTHRA RUBELLA (Elliot). 
Plate 12. 
1909. Cercopithecus rubellus Evtior, Ann. and Mag. Nat. Hist., ser. 8, vol. 4, 
p. 260. September. (Fort Hall, British East Africa; type in British 
Museum. ) 
1910. Cercopithecus centralis luteus Evtior, Smithsonian Misc. Coll., vol. 56, 
No. 7, p. 1. June 11. (Wambugu, British East Africa; type in U. S. 
National Museum. ) 
1913. Lasiopyga rubella Etz1or, Rey. Primates, vol. 2, p. 342. June 15. 
1913. Lasiopyga centralis lutea Evtior, Rey. Primates, vol. 2, p. 346. June 15. 
Specimens.—Two, as follows: 
British East ArricaA: Wambugu, 2 (Loring). 
One of these specimens is the type of Elliot’s Cercopithecus centralis 
luteus, which is unquestionably synonymous with his earlier C@. 
rubellus.2 The paratype is a young male, not a female, as stated by 
Elliot. The subspecies is best distinguished externally by the 
ochraceous coloration of the underside of the tail, which is most 
pronounced near the black tip. 
1 johnsoni.”” 
2 See Lénnberg, Arkiv fir Zoologi, vol. 10, No. 12, pp. 1-4. 1916. 
