8 Genera and Subgenera of the Scluropterus Oroup. 



Incisors broader and heavier, nearly one third broader "than 

 in equally aged examples o^ pulvendentus. 



Dimensions of the type (from skin) : — 



Head and body 290 mm. ; tail 215; hind foot 41. 



Skull : greatest length 46 ; basilar length 37-5 ; greatest 

 breadth 30; nasals 12*2 x 7-8; interorbital breadth 10; 

 intertemporal breadth 12-3; breadth of brain-case 21; 

 palatilar length 20 ; length of upper tooth-series (probably 

 slightly reduced by age) 9. 



Bab. Baram District, E. Sarawak. 



Ttjpe. Old female. B.M. no. 91. 8. 28. 10. Collected in 

 1891 by Dr. Charles Hose. 



Petaurillus emih'ce, sp. n. 



Nearly allied to P. hosei, but smaller in all dimensions. 



Colours in all respects quite like what the type of hosei 

 would probably have had if it had not been skinned out of 

 spirit, and therefore presumably discoloured. Tims the type 

 of eiyiilke, sent home as a skin, is paler rufous on the back 

 (tips of hairs near vinaceous-cinnamon of Ridgway), and the 

 belly is pure white, without the slight rufous tinge already 

 suggested as possibly due to spirit. Cheeks pale buffy 

 whitish, no darker line perceptible below the eye. In all 

 other respects the original description of hosei will fit eniilice. 



Skull, apart from its markedly smaller size, quite like that 

 of hosei, except that the nasals do not project backwards 

 beyond the fronto-pr em axillary processes. 



Dimensions of the type (measured on the skin) : — 



Head and body 72 mm. ; tail Q2, its longest lateral hairs 7 ; 

 hind foot 17. 



Dimensions of an adult female in spirit : — 



Head and body 68 mm.; tail 67; hind foot 16 ; ear 15. 



Skull (of type) : greatest length 24 ; basilar length 17*5 ; 

 greatest breadth 15*2 ; length of nasals 6*1 ; interorbital 

 breadth 6"5; palatilar length 9 6; length of upper cheek 

 tooth-series 3'9, of true molar series 2'7. 



Hah. Baram, E. Sarawak. 



Type. Adult male. B.M. no. 3. 4. 9. 1. Collected 14th 

 May, 1901, by Dr. Charles Hose. 



Keadily distinguishable from P. hosei by its much smaller 

 size. 



I have much pleasure in naming this pretty little flying- 

 squirrel, the smallest member of the group, in honour of 

 Mrs. Hose, the wife of the discoverer of its only near ally. 



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