()70 iMr. O. Thomas on 



lomidod. No tendency to the peculiar cranial inflation of 

 S. ni'rojaiis. 



Dimensions of the type (measured on skin) : — 



Head and body 122 mm. ; tail (doubtfully perfect) 106 ; 

 hind foot (wet) 27 ; ear 16. 



iSkull : <;reatest length 33*5 ; condylo-incisive length 30 ; 

 nasals 12 6; interorhital breadth 5'8; breadth of brain-case 

 14'2 ; zygomatic plate 2--4; palatilar length l-l'S ; palatal 

 I'oramina 4'9 ; upper molar series 5*7. 



Ilab. Saruvvaged Mts., 4000 ni. "From the highest 

 point." 



Ti/pe. Adult female. Original number 18. Collected 

 August 1914 by C. Kejsser. Presented by Lord Rothschild. 

 Two specimens. 



The strong cinnamon colour of this mountain-rat is 

 jieeuliar to it, all the other species being of a dark brown. 



Tlie members of the genus Stenomys are characteristic of 

 the New Guinea mountains, and are often the only Murid« 

 to be found at the higher altitudes. The present one, from 

 13,000 feet, occurs at a greater height than any as yet 

 recorded. 



4. Pogonomys sylvestris, Thos. 



Two specimens. Rawlinson Mts., June 1911. 

 Descriljed on these examples in 1920. 



5. Macropus heysseri lanahis, subsp. n. 



cJ, E.M. 8 (Keysser No. 24), 10 (young). Saruwaged 

 Mts., 3000-3800 m., August 1914. 



? , E.M. 6, 7, 14. Saruwaged Mts., 3000-3800 m., 

 August 1914. 



Essential characters as in heysseri of the Bulung region, 

 but the fur much thicker, longer, and more woolly (hairs of 

 hind back near!}- 40 mm.), while the colour, instead of being 

 nearly uniformly dark brown (face, nape, and back), is marked 

 by there being a distinct nuchal mantle of lighter brown hairs 

 separating the blackish crown from the dark brown back. 

 General colour of back near " cinnamon-brown," the lighter 

 tone, as com|)ared with heysseri, being due to the greater 

 development and jnominenceof the more or less cinnamon and 

 very woolly underfur. Under surface much more strongly 

 ochraceous than in keysseri^ approaching "ocliraceous-tawny." 

 Tail more heavily clothed than xukeysseri, well-iiaired through- 

 out ; bicolor, the upper side dark brown, the lower dull buffy 

 whiti.sh. 



