72 BULLETIN 99, UNITED STATES NATIONAL MUSEUM. 



RATTUS EAISERI NOR^E (Wronghton), 



1909. Mus norx Wroughton, Ann. and Mag. Nat. Hist., ser. 8, vol. 4, p. 541. 



December. (Guasa Narok, Northern Guaso Nyiro, British East Africa; 

 type in British Museum.) 



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



British East Africa: Isiola River, 1 (Heller); Mount Gargues, 

 20, including 1 in alcohol and 1 odd skull (Heller) ; Mount Lololokwi, 

 19, including 1 in alcohol (Heller); Northern Guaso Nyiro, 5 (Heller). 



This more northern subspecies of the common East African group 

 of rats of the subgenus jEthomys is readily distinguished from the 

 more southern Rattus Icaiseri hindei by its more grayish, less reddish 

 coloration and much longer tail. It is colored almost precisely like 

 R. Ic. JieUeri of Lado, from which it differs in average size alone; and is 

 perhaps scarcely separable from R. t. medicatus, which it even more 

 resembles. 



A female from 6,000 feet on Mount Gargues, August 28, contained 

 four small embryos. 



RATTUS KAISERI TORNERI (HeUer). 



Plate 21. 

 1914. Epimys kaiseri turneri Heller, Smithsonian Misc. Coll., vol. 63. No. 7, 

 p. 8. June 24. (Kisumu, British East Africa; type in U. S. Nat. Mus.) 



Specimens. — Twelve, as follows: ^ 



British East Africa: Kisumu (Heller). 



Heller states that these specimens were all collected in the papyrus 

 beds on the margin of Kavirondo Bay. The form is doubtless con- 

 fined to the shore of Victoria Nyanza, the higher country immediately 

 back of the lake being occupied by the long-tailed, less richly colored 

 medicatus. A female collected January 19 contained 3 embryos. 



This is a rich reddish-tinted race of Icaiseri, most resembling 

 hindei in general coloration, but darker and with a still shorter tail 

 than in that form. 



RATTUS EAISERI HINDEI (Thomas). 



1902. Mus hindei Thomas, Ann. and Mag. Nat. Hist., ser. 7, vol. 9, p. 219. March. 

 (Machakos, British East Africa; type in British Museum.) 



1910. Epimys hindei Roosevelt, African Game Trails, Amer. ed., pp. 473, 477; 



London ed., pp. 485, 489. 

 1914. Epimys hindei CocK^REhh, Miller, and Printz, Zool. Anz., vol. 44, p. 436, 

 figs. 2, 2a. June. 



Specimens. — Sixty-two, from the following localities: 

 British East Africa: Changamwe, 6, including 2 in alcohol 

 (Mcarns); Kapiti Plains, 2 (Loring); Machorra, Taita Hills, 7 (Heller); 

 Mariakani, 1 (Heller); Mazeras, 12, including 1 in alcohol (Heller); 

 Mount Sagalla, 5, including 1 in alcohol (Heller); Mount Mbololo, 6, 

 including 3 in alcohol (Heller); Mount Umengo, 2 (Pleller); Mtoto 

 Andci, 4, including 1 in alcohol (Heller) ; Sir Alfred Pease's Farm, 2, 

 including 1 in alcohol (Mearns); Ulukenia Hills, 15, including 1 in 

 alcohol (Loring). 



