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



SMdl of the Mus jerdoni type with small bulLie, very similar to 

 that of Mus ivhiteheacli but smaller. 



Dimensions (of type in flesh). Head and body 120 mm. ; tail 

 105; hind foot 26; ear 17. 



Skull. 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 brain-case at roots of zygomata 13 ; length of molar series 5. 



Habitat. Johore, Malay Peninsula. 



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

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



This species may be easily distinguished from Mus uihiteheadi, 

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

 yellowish coloration and slightly smaller size. Mr. Kloss has sent 

 over 5 specimens altogether, viz. : — 



«, &. cJ $ . Pelepak, Johore, March 1905. 



c. 6 ■ Mt. Lun Chu, Johore, May 1905. 



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



Mus VALIDUS Mill. 



Mus validus Mill. Pi'oc. Biol. Soc. Wash. vol. xiii. p. 141 

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



a, 5. d" 5 . Kangka Kuli, Johore, 24th Nov., 1905. 



This species is probably the Malay form of Mus onuelleri. 

 Mr. Miller in his original description states that this species bears 

 a great external resemblance to AIus boioersi ; but this is hardly 

 the case, for the general colour of Mus howersi 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. Mus botoersi has in addition the terminal 

 portion of the tail white, whilst in Mus validus the tail is uni- 

 colorous and dark. 



There are no skulls with these specimens, but the cranial 

 characters have been carefully given by Mr. Miller. 



Mus JARAK Bonh. 



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

 (1905). 



a. $ . Pelepa,k, Johore, 6th Jan. 1905, 



b, c. cJ 2 . Kangka, Senibong, S.W. Johore, 10th July, 1905, 

 and 12th Sept., 1904. 



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 



* JfKS ,/amfc nearly allied to 3Ius jalorensis, but darker on the upper parts, the 

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

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

 Selangor Museum. 



