Mmnnials from S. Xijn'ia. 377 



a l)iiglit russet «niid are markedly larger in all measurements. 

 This larger, brighter form in my opitiion, so far as I caa 

 judge without seeing the type, represents Temminck*3 

 riijinus. In the absence of a really mature specimen of the 

 smaller form, and seeing that all these individuals were taken 

 at the same time and ])lace, 1 have decided not to sej)arate it 

 without further evidence. 



If my identification is correct the normal dimensions of 

 riifinus are : — 



Head and body 1C)5 mm.; tail 150; hind foot .35 ; ear 20. 



Skull: basilar length ii2 ; zygomatic breadth 1*J; molars 6*3. 



8. Arvicanthis occidentalis, sp. n. 



^ . 4. 11. 1. 14. Bo, Sierra Leone. 



This specimen was })resented to the Museum some time ago 

 by Mr. Kemp, and was provisionally identified as ritjinus. 

 My identification of the S. -Nigerian form as rujinus leaves 

 this individual without a name. 



It is smaller than even the smaller form included above 

 ill riijinusj which it closely resembles in coloration, though on 

 the back it is even less rufous. 



The dimensions are : — 



Head and body 140 mm, ; tail 117 ; hind foot 30 ; ear 17. 



Skull : basilar length 27 ; greatest breadth 17 ; molars 6'5, 



JIab. Bo, Sierra Leone. 



^I/P^- (S - 4* 11* !• I'l- -^n old individual with much worn 

 teeth taken by Mr. Kemp, 21st January, 1904, and presented 

 to the Museum. 



Its duller, paler colour and smaller size of both body and 

 skull combined with larger molars suffice to distinguish it 

 unmistakably from rujinus. 



9. Arvicanthis fasciatus J sp. n. 



(J. 5. 12. 1.17-18. Agoulerie, Anambra Creek, S.Nigeria. 



An Arvicanthis of the Aa/7>ar//.v group, but having the pale 

 lines practically contituious ; about the same size as the 

 sj)ecimen in the Museum collection identified by Mr. Thomas 

 as zehra (P. Z. S. 1U03, i. p. '2.'d'6), but much darker in general 

 appearance. The general ground-colour " bistre," the pale 

 stripes buff, continuous, but showing signs of breaking up 

 into spots towards the rump ; a broad, black, median dorsal 

 stripe as in pulchellus. Eye-ring and a small but well- 

 marked area on the sides of the niuzzle concolorous with tlio 



