10 MR. J. LEWIS BONHOTE ON MAMMALS [Jan. 16, 



Skidl of the Mas jerdoni type with small bulla^, very similiir to 

 that of 3Ius whiteheadi but sinaller. 



Dimensions (of type in flesh). Heail and hody 120 mm. ; tail 

 105; hind foot 26; ear 17. 



Skidl. Greatest length 32 mm. ; basilar length 24 ; palatal 

 length 7 ; diastema 8 ; length of incisive foramina 5 ; length of 

 nasals 11 ; zygomatic breadth 9 ; interorbital breadth 5*5 ; breadth 

 of bi-ain-case at roots of zygomata 13 ; length of molar series 5. 



Ihdntat. Johore, Malay Peninsula. 



Type. Coll. C. B. Kloss, No. 218. Adult $. Collected on 

 Mount Pulai, 8. Johore, 1600', on the 31.st December, 1904. 



This species may- be easily distinguished from Miis ichiteheadA, 

 the only species with which it might be confused, by its paler and 

 yellowish coloration and slightly smallei- size. Mr. Kloss has sent 

 over 5 specimens altogether, viz. : — 



«, b. S 2- Pelepak, Johore, March 1905. 



c. S ■ Mt. Lun Chu, Johore, May 1905. 



d, e. 2 (one the type). Mount Pulai, Johore, Dec. 1904. 



MUS VALIDUS Mill. 



Mas vcdidus Mill. Proc. Biol. Soc. Wash. vol. xiii. p. 141 

 (1900) ; Bonh. Fasc. Malay., Zool. vol. i. pp. 34 t 37 (1903). 



rt, &. J 2 . Kangka Kuh, Johore, 24th Nov., 1905. 



This species is probably the Malay form of Mus muelleri. 

 Mr. Miller in his original description states that this species beai-s 

 a great external resemblance to Mas boajersi ; but this is hardly 

 the case, for the general colour of Mas boa:ersi is greyish and its 

 fur is fairly soft, whereas in the species under consideration the 

 general colour is dark brown, each hair having lighter annulations, 

 and the fur is very harsh. Mas boimrsi has in addition the terminal 

 portion of the tail white, whilst in Mas vaUdus the tail is uni- 

 colorons and dark. 



There ai-e no skulls with these specimens, but the cranial 

 chai-acters have been carefully given by Mr, Miller. 



Mus JARAK Bonh. 



Mus jarak * Bonh. Journ. Fed. Mai. States, vol. i. no. 3 

 (1905). 



a. 2 . Pelepak, Johore, 6th Jan. 1905. 



h, G. c? 2 . Kangka, Senibong, S.W. Johore, 10th July, 1905, 

 and 12th Sept., mh. 



d-^h. 6 . Pasir Gudang, S.W. Johore, 10th May, 1905. 



A series of eight skins sent home by Mr. Kloss proves this 

 species, which I had supposed to be an island form, to occur in 



* Mus Jarak nearly allied to Mus jalorensis, but darker on the upper parts, the 

 fulvous tips being browner and greatly diminished in size. Type localitj', Pulau, 

 Jarak, Str. of Malacca. A full description of this species is published by the 

 SelanfTor Museum. 



