374 On nexo Bats and Rodents. 



Tliis species, referred to N. hracli;ii)terus by Dobson, is 

 evidently not that described by Peters, for the skull of the 

 latter is no less than 21*5 mm. in length, while the typical 

 skull of N. leonis, 19"4 mm. long, is the largest of the five 

 skulls of the western form examined by me. 



On the other hand, Dr. Jentink's J^. hemmeleni from 

 Liberia lias, as he has been so good as to inform me, a skull 

 only 16"5 mm. in total length, with a tooth-row length of 

 just 6'0 mm. 



Di'jyodillus cavipestris roscika;, subsp. n. 



Similar in essential characters to the true D. campestris of 

 Algeria, north of the Atlas, but the colour much paler. 



Size, proportions, and degree of tail-tuft as in campestris. 



General colour pale fawn, darkest on the back, clearer on 

 the sides, where there is scarcely a trace of the bufFy tone 

 found in campestris. Under surface, hands, and feet pure 

 wliite. Tail whitish or pale fawn above, white below, tlie 

 tuft, which is of medium development, pale slaty greyish. 



Skull with rather smaller buUge than in true campestris. 



Dimensions of the type (measured in the flesh) ; — 



Head and body 102 mm. ; tail 120 ; hind foot 2'6 ; ear 15. 



Skull: greatest length 30; greatest breadth 15'5; nasal 

 length 11*3; breadth of brain-case 13"6 ; upper molar series 

 3-9. 



Hah. Biskra, Algeria. 



Tijpe. Adult male. B.M. no. 8. 7. 12. IG. Original 

 number 35. Collected 1 April, 1908, by J. Steinbach, and 

 presented by the Hon. N. C. Rothschild. Two specimens. 



1). campestris was not hitherto known to occur south of the 

 Atlas, and I had supposed it to be represented by the larger 

 and more tufted-tailed D. dodsoni. But these specimens are 

 clearly much more closely allied to it than is the latter, and 

 do not seem to be more than subspecifically separable. 



In company with this gerbil, Mr. Hothschild has presented 

 to the Museum a number of other species from Biskra, of 

 which the most interesting are Elepdiantulus deserti, Dipo- 

 dilhis garamantis, Meriones schousboei, and Psammomys 

 algiricHS. 



Mus woodwardi, sp. n. 



Closely allied to the M. tunneyi, Thos., of Mary River, 

 Northern Territory, but smaller throughout. Colour quite 

 as in that species, the upperside of the same yellowish buffy, 

 and the underside similarly white. Indeed the two animals 



