1906.] FROM JOHOEE AN'D SINGAPORE. 9 



MUS SURIFER Mill. 



Mus surifer Mill, Proc. Biol. See. Wash. xiii. p. 148 (1900) ; 

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



2 c^, 7 ? . Pelepak, Johore, March 1905. 



12 c? , 18 $ . Pulai, Johore, Dec. 1904 to March 1905. 



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

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

 S . Mt. Lun Chu, Johore, 13th May, 1905. 



$ . Johore Bahru, 21st May, 1905. 



S . Kangka Ketcho, Tebraun. 



This large series of Mus surifer 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 off 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 IN^AS, sp. nov. (Plate I. fig. 1.) 



Mtcs lohiteheadi Thos., Bonh. P. Z. S. 1900, p. 880. 



The Malayan representative of Mus ochraceiventer Thos. Fur 

 long and thickly interspersed with spines. General coloiu- above 

 uniform grizzled rufous (ochraceous rufous, Ridgw.), fading to pale 

 ochraceous (pinkish buff, 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 

 preseiwation that a description is impossible. 



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

 152; hind foot 31. 



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



Type. B.M. 2.11.15.2. Adult §. Gunong Inas, December 

 1899. 



The type specimen of this species was erroneously refei-red by 

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

 specimen in - the present collection proves it to be sufficiently 

 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. whiteheacli by its 

 larger size. 



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



The Malayan representative of Mus lohiteheadi Thos. Fur 

 shoi-t, thickly interspersed with spines. General colour above 

 rufous-bu0^(orange-buif, Ridgw.), grizzled with dark brown, the bufi" 

 colour becoming purer on the flanks and shading to pale ochraceous 

 (cream-bufl', Ridgw.) on the under jaarts. Feet and hands white. 

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



