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



matic width: 59,2; greatest width of braincase: 42,0; length of nasals mesially: 50,o; 

 length of frontals mesially: 33,o; least interorbital width: 42,o; median palatal length: 

 45,5; diastema: 28,7 mm. 



45. Trichys lipura Gunther. 



Proc. Zool. Soc London, 1876, p. 739. 



No. 40. (f Camp 6, Easteru Borneo 5 /a 1914 (2,000 feet). Head and body: 399 inni. Tail: 214 

 ram. Hiudfoot: 63 mm. Ear: 29 mm. 



In the Proceedings of the Zoological Society London 1876, Dr. A. Gunther 

 described a Porcupine, the type of which had been collected on the Northwestern side 

 of Borneo opposite the island of Labuan. Unfortunately the tail was broken off in 

 the type specimen, a thing which made Gunther call his animal »lipura». 



All the species of Trichys have, however, rather long tails which at the tip 

 are provided with some long, flat and hollow bristles. These bristles are grooved 

 for their whole length. The extreme base of the tail is covered with spines, similar 

 to those of the back. The remainder of the tail is covered with well-defined scales 

 and these scales become larger nearer the tip. Each scale is subtended by a single 

 stiff hair, which grow larger near the tip. The upper parts of the body as well 

 as the sides are covered with spines, brown at the pointed tips and whitish at 

 their basal parts. These spines are rather flat, and they are grooved both above 

 and below. Interspersed among them are some rather long stiff bristles, most nu- 

 merous on the posterior back. The head, underparts and legs are covered with 

 softer and shorter bristle-like hairs. The fifth digit on the anterior limbs is provided 

 with a flat nail. 



In the Proceedings of the Zoological Society London, 1889, p. 235, Oldfield 

 Thomas proposed to change the name given to the Bornean animal to Trichys guent- 

 heri, because the animal normally possesses a tail. This name, however, must on 

 account of the laws of priority, only become a synonym of T. lipura Gunth. 



Skull measurements : Greatest length of skull: 87. i; length from condylus to 

 gnathion: 82,3; basicranial length: 77,2; zygomatic width: 44, s; greatest width of 

 braincase: 30,5; least interorbital width: 22,4; least postorbital width: 15, i; length 

 of nasals mesially: 24, s; breadth of combined nasals at anterior extremity: 10,e; 

 diastema: 24,7; median palatal length: 37,3; breadth of basioccipitale between anterior 

 extremity of bullae: 0,2; distance between meatus auditivus and inner edge of bulla : 

 14,8; occipital depth: 15,3; length of upper toothrow (alveoli): 16,4; length of lower 

 toothrow (alveoli) : 15, 1 mm. 1 



Remarks: Miller (Proc. U. S. Nat. Mus., vol. 26, 1903, p. 469) has described 

 a form of Trichys under the name of T. macrotis, the type of which was collected 

 at Tapanuli Bay, West coast of Sumatra. This form is said to be similar to T. 

 lipura from Borneo, but with longer ears, more angled hamulars and smaller 

 lachrymal bones. Length of ear from meatus in the t3^pe of T. macrotis: 28 mm. 



