24 GYLDENSTOLPE, ON A COLLECTION OF MAMMALS MADE IN EASTERN AND CENTRAL BORNEO. 



17. Gymnura alba Gtebel. 



Zeitschr. Ges. Naturw., vol. 22, 1863, p. 277. 



No. 32. Toembang Marocwe, Central Borneo 2 /n 1915. Hindfoqt: 67 mm. (measured in skin). — 

 $ imm. Poeroeok Tjalioe, Central Borneo, Nov. 1915. Ilindfoot: 56 mm. (measured in skin). 



The immature specimen is almost wholly pure white. only some of the long 

 hairs of the back are brovvnish towards the tips, while in fully adult specimens there 

 are a nuraber of long blackish hairs spread över the upper parts of the body. The 

 woolly underfur is perfectly white both in the adults and in the immature speci- 

 mens. The lower parts of the body are tinged with ochraceous. 



By the Malays it is called »Tikus bulan» fmoon-rat) on account of its nocturnal 

 habits. The animals smell badly of musk and are therefore seldom eaten by the 

 natives. 



Skull measurements (for comparison the measurements of a male specimen 

 collected at Pontianak in Western Borneo are also recorded). 



32 



Condylobasal length of skull 85,7 



Basieranial length of skull 80,0 



Occipitonasal length j 74,8 



Zygomatic width 42,3 



Greatest width of brainease ! 26,0 



Least interorbital width . j 13,0 



Length of nasals mesially i 29,1 



Breadth of comhrned nasals anteriorly j 5,6 



Median palatal length i 51,9 



Maxillary toothrow (alveoli) 36,3 



9 imm. 



Por.tiamik 

 sppcimrii 





86,2 



63,9 



80,0 



58,2 



73,2 



32,0 



42,9 



23,4 



27,9 



13,4 



14,3 



20,8 



27,5 



6,0 



8,2 



41,5 



51,2 



— 



35,2 



18. Viverra tangalunga Gray. 



Proc. Zool. Soc. London, 1832, p. 63. 



No. 11. ef imm. Kaboerau, Eastern Borneo 15 /i 1914. Head and body: 358 mm. Tail: 159 mm. 

 Hindfoot: 65 mm. Ear: 34 mm. 



In the collection there is only a single immature specimen of a Civet, which 

 probably has to be referred to Viverra tangalunga Gray. 



General colour above greyish olivaceous tinged with buff. A broad longitudinal 

 line on the middle of the back, commencing some distance behind the shoulder and 

 continued down the tail, pure black; the usual lines and spöts on the upper back 

 present and fairly distinct. Shoulder stripe brownish white, bordered both above 

 and below with a black line, the latter continued as a very distinct gorget round 



