640 0^1 a new Cynopterus /r(9m Borneo. 



Tucuman. Both have long glossy far, very different in both 

 colour and texture from tliat of Ct. saltarius, which in these 

 respects has a superficial resemljlance to the far southern 

 Ct.fueginus. The bicolor tail and narrow skull are also 

 strongly characteristic of the Salta Tuco-tuco. 



LXXXI. — A new Cynopterus /rom Borneo-. ^ 

 By Knud Andersen. 



Cynopterus persimiliSj sp. n. 



Type, [cJ ] ad., skin and skull, Sarawak, Borneo, collected 

 by Cecil J. Brooks, Esq., B.M. 12. 10. 20. 1. 



Closely allied to C. Iwrsfieldi lyoni^ (Sumatra), from 

 which it differs chiefly, or perhaps only, in the position of 

 the surface cusp of p^^ and m, (third and fourth lower cheek- 

 teeth). 



This cusp is in C. persimilis situated close to the inner 

 longitudinal ridge of the tooth, so close, indeed, that its 

 anterior extremity is qiiite or very nearly in contact with the 

 ridge (at a point a little in front of the middle of the ridge). 

 In the numerous skulls of the allied fomns of Cynopterus 

 which have passed through my hands the surface cusp is 

 either central in position or, if nearer the inner edge, quite 

 without any connection with this latter. 



Colour of fur as in C. horsfieldi and harpax. Size the 

 same, if not a little larger: — Forearm 79'5 mm. (largest 

 C h. lyoni seen, 77*5 mm.), maxillary tooth-row (c-m^, 

 crowns) 12 mm. 



The " Niadius" section of the genns Cynopfenfs was 

 liitherto known only from the Malay Peninsula (C. harpax), 

 Sumatra (C. horsfieldi lyoni), Java (C horsfieldi horsfieldi)^ 

 and Nias (C. princeps). But farther northward in Indo- 

 Malaya, in the Philippine Islands, this type of fruit-bat has 

 differentiated into a distinct genus, Ptenochirvs (inner pair 

 of lower incisors absent, outer pair of upper incisors 

 shortened). The interest of the new species here described 

 lies chiefly in the fact that it adds Borneo to the area 

 occupied hj the " Niadius" section of Cynopterus, thus 

 filling lip the distributional gap hitherto supposed to exist 

 between this section and its Philippine representative, 

 Ptenochirus. 



* Cat. Chir. i. pp. 682, 827. I take this opportunity to correct a slip 

 of the pen on p. 631 of the Catalogue : in line 85 for " larger " read 

 " smaller." 



