19(3 Mr. 0. Thomas 07i new Bats and 



Geiaes, which agrees very closely with P. oris in its cranial 

 characters, but differs by its paler and more uniformly buffy 

 colour, its fully haired under surface, and its much longer 

 and softer fur, of whicli the spines form a less considerable 

 proportion than usual. 



In the same locality Mr. Robert also obtained a porcupine 

 allied to Coendou 'prehensilis^ but differing by its much 

 darker colour and by the reduction of the white of the bases 

 of the dorsal spines to about 15 or 20 mm. In these respects 

 it agrees with the type of Gray's G. tricolor^ from whicli, in 

 the absence of much larger series of different ages, I am 

 unable to separate it. 



XXVIII. — New Bats and Rodents from West Africa, the 

 Mulay Peninsula^ and Papuasia. liy Oldfield Thomas. 



Nyctymene * Rohinsoni, sp. n. 



Slightly smaller than N. major. Ears comparatively large. 

 Fur long, thick, and close ; liairs of back about 10 mm. iu 

 length. Base of iuterfemoral membrane above more thickly 

 covered than in the allied species ; otherwise the distribution 

 of the fur is similar. General colour above dark, between 

 *' wood-brown " and " drab " of Ridgway, the black dorsal 

 line strong and well defined, extending from the withers to 

 the base of the tail. Sides of neck and sides of body below 

 dark " cinnamon/' the middle line of neck and chest more 

 greyish. Spotting piofuse, the ears as well as the limbs and 

 membranes with many prominent white spots. Ears much 

 larger than in any other species, even slightly exceeding 

 those of the much larger N. aelJo. 



Skull broad and heavily built. Frontal profile very 

 convex above the orbits, the upper edge of which is con- 

 siderably swollen. Second lower premolars with well-marked 

 antero-internal supplementary cusps. Coronoid process well 

 slanted backwards, not so upright or convex as in N. major. 



Dimensions of the type (measured on the spirit-specimen) : — 



Forearm 67 mm. 



Head and body 100 ; tail 24 ; lower leg and foot (c. u.) 

 41"5 ; ear 18. 



* Nyctymene, Beclist. 1800. 



Syn. Cephalotes, Geotf. ; Ilarpyia, 111. ; Gelasinus, Teiiuu. ; Uro- 

 nycteris, Chay. 



