Spiny Mice of Britisli E'lsl Africa, 4S7 



from tlie Taru Desert uiid Witu wliicli are undoubteclly 

 tine if/nil us. On tlie west this species was foiiiul hv 

 Mv. Vi. P. Lowe on the Southern (Jtiaso Nyiro and 

 Narossura llivers in the Nyanza Province. 



2. Aconn/.t ?. hempi, Dollni., has been recorded from many 



localiiies aK)ng' the Northern Guaso Nyiro ; tlio 

 tvpe-locality of this form is the Chanler Falls ; 

 ]\Ir. Percival has collected kempi all along the river as 

 far as the Loriau Swamp, and in the west he has 

 found it at Barinoo and on the Larrogie Mountains and 

 ]\Iathe\vs Ivange. 



3. Acomy!t i. monfanu.<t, Hell., is only known from the 



specimens collecte<l by Mr. Percival in the Marsabit 

 District. 



4. Acoviya percicaUy Dollm., was first found oji the Northern 



Guaso Nyiro at the Chanler Falls. iSitice this discovery 

 ]\Ir. Percival has collected this conspicuous species on 

 the Laikipia Plateau and on Mt. Urguess (Mt. 

 Gargues). 



5. Acomys pulchellus, Dollm., type-locality Chanler Falls, 



Northern Guaso Nyiro, has been collected Ity Mr. Perci- 

 val at Lasamis on the Marsabit Road ; a specimen from 

 as far north as Mt. Nyiro seems also to belung to this 

 species. 



6. Aconii/s niihilufi, Dollm., is known only from the specimens 



collected by Mr. Percival at Magadi. 



7. Acomys wilsoni, Thos., originally described from Mombasa 



has since been collected at Kitui, Voi, Taveta, Teita 

 Hills, Tsavo ]\ivcr, Yata Plains, Maxcras, Tarn Desert, 

 Sagala, and the Witu Forest. 



8. Acomys ic. ahhitus, Dollm., a close ally of the above, was 



founded on a series of specimens obtained bv Mv. Kemp 

 at Nyama Nyango, on the Northern Guaso Nyiro. 



These eight forms may be arranged for identification as 

 follows : — 



A. Tail lonir, more than To mm. in lenfrtli. 



a. Size of body larpe (head and body about 

 100 mm. in length). 

 a'. Colour of dorsal surface bright orange- 

 rufous u/m'tus. 



b'. Colour of dorsal surface pale greyish sandy 



buff '. 7. hempi. 



c' . Colour of dorsal .surface dark vinaceoiKs 



t^i"'^'^ ('. inontaiius. 



