120 Mr. O. Thomas 07i small Mammals 



13. Euxems erythropus, Geoff. 

 cJ . B. 32, B. 36. Daley, Fouta Djalon. 3000'. 



14. Tatera guineoe, Tlios. 



Twelve specimens, various localities. 



Described in 1910* on specimens obtained by Dr. W. J. 

 Ansorge in Portuguese Guinea. 



15. Tatera gamhianaj Thos. 



S . B. 14, 17, 18. Marakissa, Gambia. 500'. 

 S . B. 12, 15, 20 miles N.E. of Kedugn, Gambia. 450'. 

 Described last year from this series, no. B. 14 (B.M. 

 no. 11. 6. 10. 36) the type. 



16. Taterillus gracilis, Thos. 



Six specimens. Gemenjulla, French Gambia. 50'. 

 Four, Garaon. 100'. 



17. Arvicanthis setosus, Thos. 



Nine specimens. Gemeniulla. 50'. 



?. A. 87. Gamon. 100'. 



The type and only previously known specimen of this 

 species was obtained by Capt. Gifford in the Fra-Fra 

 country, Northern Territory of the Gold Coast. 



18. Arvicanthis oweni, sp. n. 



8 specimens. Gemenjulla, French Gambia. 50'. 



A small striped species of the barh^irus group. 



Quite similar in external appearance, number and relative 

 prominence of stripes, and general colour to the Upper Nile 

 A. zebra, Heugl., as represented by a specimen from Faslioda. 

 Light stripes whitish or pale cream-colour, not the stronger 

 buffy of A. dunni. Under surface white. Ears buiFy. 

 Hands and feet whitish, with buffy metapodial patches. 

 Tail long, black along its upper surface, buffy on sides and 

 below. 



Skull agreeing in size with that of A. dunm, but the 

 teeth rather and the bullas conspicuously smaller. The 

 latter are about as in ^. zebra, in which animal the skull is 

 considerably larger. 



* Ann. & Mag. Nat. Hist. (8) v. p. 353. 



