536 On new small Mammals from Neio Guinea. 



Pogonomys forhesi mambatus, subsp. n. 



Similar in the general cinnamon-colour to true forbesi, but 

 the whitish patches between eye and ear are practically 

 absent, and there is a distinctive difference in the skull. 



In forbesi and vulturnus the front edge of the zygomatic 

 plate projects slightly forwards, so that, when viewed from 

 above, it is visible in front of the anteorbital bridge, while 

 from below this bridge cannot be seen. But in mambatus the 

 front edge runs down quite vertically, or is even slightly 

 concave, so that it cannot be seen from above in front of the 

 bridge, while from below the underside of the bridge is clearly 

 visible in the cleft of the foramen. Other cranial characters 

 apparently as usual. 



Dimensions of the type (measured on skin) : — 



Head and body 173 mm, ; tail 236; hind root 30. 



Skull: greatest length 37; condylo-incisive length 3G'4- ; 

 zygomatic breadth 22'2 ; zygomatic plate 1 ; upper molar 

 series 5' 7. 



Hah. Mambare River, N.E. British New Guinea in the 

 old sense ; type from Kokoda, 1000'; other specimens from 

 Tamata and Ioma on the same river. 



Type. Adult male. B.M. no. 7. 2. 1. 10. Original num- 

 ber 16. Collected 11th July, 1908, and presented by O. A. W. 

 Monckton, Esq. Twelve specimens. 



The difference in the skull, although slight, is so constant 

 in the good series that we owe to the work of Messrs. Monckton 

 and Stalker that it seems proper to recognize the Mambare 

 form as distinct from that of Mt. Owen Stanley. 



Distttchurus pennatus. Pet. & Dor. 



The examination of a topotype of this beautiful marsupial 

 obtained by the Piatt Brothers shows that three forms of it 

 may be recognized, as follows: — 



D. pennatus pennatus. 



General colour paler, wood-brown above and pale creamy 

 buffy ("light buff''') below throughout, the hairs pale to the 

 roots. Black orbital lines not broadened behind and not 

 especially sharplv defined from the light area between them. 

 Secator (//, the fourth tooth from the back), although small, 

 two-rooted, oblong, and obliquely set in the tooth-row. 



Hab. Arfak region, N.W. New Guinea ; Andai, Weyland 

 Mts. 



