EAST AFKICAN MAMMALS IN NATIONAL MUSEUM. 153 



bullse. Intergradation with GrapMurus murinus griseus is shown by 

 specimens from Meru Road, listed under griseus, and doubtless takes 

 place at various points on the lower slopes of the mountain. 



GRAPfflURUS MURINUS SATURATUS DoUman. 



1910. Graphiurus microtis saturatus Dollman, Ann. and Mag. Nat. Hist., ser. 8, 



vol. 5, p. 204. February. (South face of Mount Elgon, British East 



Africa, at 9,000 feet; type in British Museum.) 

 1910. Graphiurus parvus Roosevelt, African Game Trails, Amer. ed., pp. 472, 



476; London ed., pp. 484, 488. (Part: reference to Sotik; not Graphiurus 



parvus of True.) 



Specimens. — Forty-three, from localities as follows : 

 British East Africa: Engare Narok River, 1 (Loring) ; Kabalolot 

 Hill, Sotik, 1 (Heller); Kaimosi, 21 (Heller); Kisumu, 1 (Heller); 

 Lake Naivasha, south side, 1 (Mearns) ; Mount Kenia, west side at 

 7,000 feet, 1 (Heller); Naivasha Station, 10 (Loring); Nzoia River, 

 Guas Ngishu Plateau, 1 (Heller); Oljoro O Nyon River, 2 (Heller, 

 Loring) ; Southern Guaso Nyiro River, 4 (Lormg) . 



This dark-colored subspecies of rnurinus has a wide range in western 

 British East Africa. Specimens from the Southern Guaso Nyiro and 

 Sotik seem indistinguishable from skins and skulls from Kaimosi 

 and the Guas Ngishu Plateau. The specimen from the west side of 

 Mount Kenia at 7,000 feet is in some respects peculiar and may rep- 

 resent another race, still undescribed. It has a skull decidedly larger 

 than the average for saturatus, with wider rostrum and higher brain- 

 case. The coloration is hardly matched in the series of saturatus and 

 is especially dark and rich on the underparts. The auditory bullae 

 are large. The specimen is clearly best referred to saturatus, rather 

 than to raptor or griseus, and Dollman has already recorded saturatus 

 from this vicinity. No specimen in our large series of saturatus, or 

 indeed of any other East African form of Graphiurus, approaches it 

 in the dimensions of the skull. 



GRAPfflURUS MURINUS ISOLATUS HeUer. 



1892. Eliomys murinus True, Proc. U. S. Nat. Mus., vol. 15, p. 459. (Not of 



Desmarest.) 

 1912. Graphiurus murinus isolatu^TEiELLER, Smithsonian Misc. Coll., vol. 59, No. 



16, p. 3. July 5. (Mount Umengo, Taita Mountains, British East 



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



Specimens. — Nineteen, from localities as follows: 



British East Africa: Mount Mbololo, 5 (Heller); Mount Umengo, 

 11, including 1 in alcohol (Heller). 



German East Africa: Mount Kihmanjaro, 3 (Abbott). 



This dark colored subspecies resembles G. m. saturatus externally, 

 but the skull is easily separated from skulls of saturatus by the much 

 smaller bullae. On Mount Umengo Heller found three females preg- 

 nant as follows: November 11, two embryos; November 12, three 

 embryos; November 13, four embryos. Doctor Abbott obtained the 



