1906.] FROM JOHOEE AND SINGAPORE. 9 



MUS SURIFER Mill, 



Mus surifer Mill., Proc. Biol. Soc. Wasli. xiii. p. 148 (1900) ; 

 Bonh. Fasc. Malay., Zool. vol. i. p. 26 (1903). 



2 J , 7 ? . Pelepak, Johore, March 1905. 



12 d' , 18 $ . Pulai, Johore, Dec. 1904 to March 1905. 



3 $ . Kangka Kuli, Johore, 28th Nov., 1904. 

 $ . Kangka Amiug, Johore, 29th May, 1905. 

 c^ . Mt. Lun Chu, Johore, 13th May, 1905. 



5 . Johore Bahru, 21st May, 1905. 



S . Kangka Ketcho, Tebraun. 



This large series of Mus sitrifer calls for little comment ; the 

 examples show a slight variation in size, and the young are much 

 duller in colour, being of a uniform brown (hair-brown, Ridgw.). 

 The adult pelage first appears along the flanks. Mr. Miller's 

 distinction of the white of the foot being cut oif from the white of 

 the inside of the thighs owing to the brown colour encircling the 

 ankle, appears to be a perfectly constant feature. 



Mus iNAS, sp. nov. (Plate I. fig. 1.) 



Mus whiteheadi Thos., Bonh. P. Z. S. 1900, p. 880. 



The Malayan rej)resentative of Mus ochraceiventer Thos. Fur 

 long and thickly intersjjersed with spines. General colour above 

 uniform gi-izzled inifous (ochraceous rufous, Ridgw.), fading to pale 

 oehraceous (pinkish bufi", Ridgw.) on the under parts. Feet and 

 hands brownish white. Tail rather shorter than the head and 

 body, almost naked and bicolor. 



Skull. The only skull available is in such a bad state of 

 preservation that a description is imjjossible. 



Dimensions of type (in flesh). Head and body 162 mm.; tail 

 152; hind foot 31. 



Habitat. Gunong Inas, Perak. Also found in Johore. 



Ty2)e. B.M. 2.11.15.2. Adult $. Gunong Inas, December 

 1899. 



The type specimen of this species was erroneously referred by 

 me some years ago to M. tvhiteheadi. The advent of another 

 specimen in the present collection proves it to be sufiiciently 

 distinct from the Bornean form to merit description. It may be 

 distinguished from Mus ochraceiventer by its more rufous colour 

 above and paler colour beneath, while the tail is very much more 

 markedly bicolor. It is distinguishable from M. whiteheadi by its 

 larger size. 



Mus KLOSSi, sp. nov. (Plate 1. fig. 2.) 



The Malayan representative of Mus whiteheadi Thos. Fur 

 short, thickly interspersed with spines. General colour above 

 ruf ous-bufr(orange-bufli", Ridgw.), grizzled with dark brown, the bufF 

 colour becoming purer on the flanks and shading to pale ochraceous 

 (cream-buft', Ridgw.) on the under parts. Feet and hands white. 

 Tail shorter than the head and body, almost naked and bicolor. 



