576 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxi. 



ton is .separated from the west coast of Borneo by the wide Kariniata 

 Strait (about 1;^5 miles), which has an average depth of about 25 

 fathoms. The notes on Doctor Abbott's collecting stations are given 

 ])eyond. 



From the geographical situation of these two islands it would be 

 expected that their mammal faunas would be similai- to the fauna of 

 Sumatra; but from a study of Doctor Al)bott's collections it ))ecomes 

 apparent that the zoological relations of these two islands, so far as 

 mammals are concerned, are with distant Borneo, and not with near by 

 Sumatra. The relationship between themselves is rather close. 



SYSTEMATIC LIST OF SrEVIES. 



TRAGULUS BANCANUS, new species. 



1887. Tfugulus wqni Jentink, Mus. d'Hist. Nat. de Pays-Bag, IX, Cat. Oteol. 



Mammiferesi, 1887, p. 150. 

 1891. Tragulus napii Jextink, Notes Leyden Museum, XIII, 1891, p. 209. 

 1905. Tragulus luipn Willink, Natuurkundig Tijdsclirift Nederlandsch-Iiidi;-, 



XLV, p. 198. 



Type.— Aduh female, skin and skull, Cat. No. 124714, U.S.N.M. 

 Collected at Tanjong Tedong, island of Banka, east of Sumatra, May 

 31, 1904, by Dr. W. L. Abbott. Original number 8283. 



Diagnostic charaeters. — Very closely related to Tragulus napu of 

 Sumati'a, but brighter in color; skull not quite so large. 



Color. — Type: General color above tawny-ochraceous (in T. tiajni it 

 is ochraceous), but everywhere ver}' largely -obscured by the conspic- 

 uous black tips to the hairs. On the sides the tawny-ochraceous is 

 replaced by a dull ochraceous or ochraceous buff. Top and sides of 

 the head and neck similar in color to })ack, but less obscured by black 

 tips to the hairs, except along* the indistinct nape stripe. Underparts 

 white, except a short narrow suffusion of the color of the sides just 

 posterior to the chest. Throat pattern normal, the hairs of the dark 

 stripes a dull tawny-ochraceous. l)ut heavily tipped with black so 

 that but little of the former color is seen. Hairs of collar dull ochra- 

 ceous tipped with black, both colors equally prominent. Forearm 

 similar in color to the back on outer side, but l)lack tips to hairs less 

 conspicuous and scarcely noticeable or absent al)out the wrist. Inner 

 side of foreleg white. Hind legs similar in color to the sides, but 

 black less conspicuous. Just above heel, at situation of gland, a 

 rather conspicuous spot of tawny-ochraceous, in contrast to the gen- 

 eral ochraceous color of the legs. Tail like back above, but black not 

 so conspicuous; white below and at tip. 



Skull and teeth. — There are no characters by which the skull of 

 Tragulus hancanus can be disting'uished from that of T. napu. 



Measurements. — See table, page 681. 



