Five new Mammals from Java. 375 



Remarks. — We have followed Thomas and Wroughtou 

 (P. Z. S. 1909, i. p. 372) in adopting the name pyrrhus, 

 Horsf., for both black and yellow forms of the monkey 

 usually known hitherto as Semnoplthecus maurus, which 

 latter name is inapplicable as belonging to a West-African 

 mangabey. We cannot accept Elliot's views in adopting 

 the earlier title auratus, Geoff r., 1812. Dr. Elliot makes 

 no statement as to the skull, but remarks that the tail has 

 black hairs intermingled with the golden-yellow ones, which 

 tends to show that the specimen is quite immature. It is, 

 moreover, without exact provenance. Neither Horsfield nor 

 any other author has designated any type-locality for pyrrhus, 

 and we therefore fix it as the province of Pasuruan, whence 

 Schlegel and Jentink have cited many specimens. 



As regards the present form, Schlegel (Mus. Pays-Bas, xii. 

 p. 55, 1876) has already noted that the Eastern form is very 

 much greyer than animals from the western parts of the island, 

 where adults are quite black. 



Ruttus sabanus mayapahit, subsp. n. 



Type. — Adult female (skin and skull) collected at Tjibodas, 

 West Java, 5000 ft., on February 12th, 1916, by H. C. 

 Robinson. Federated Malay States Museums, no. 1/16. 

 Original no. 7178. 



Characters. — A rat of the sabanus-vociferans group, but 

 differing from all described Malayan forms in having the tail 

 not bicoloured. 



Colour. — Pelage of the type usual in the group, but on the 

 whole rather less wiry. Ochraceous-tawny element rather 

 paler and less prominent, median area of back rather dark. 

 Under surface white, faintly tinged with cream, sharply 

 defined from the sides. Feet separated from the limbs by a 

 ring of mouse-grey. Brown median streak on the hands not 

 reaching the terminal digits, which are pure white. The 

 same area on the feet less defined than in other members of 

 the group. Tail coarsely ringed and thinly clad with hairs 

 dark at the base, but becoming rather paler towards the tip. 

 Ears elongate, extremely thinly clad with very short hairs, 

 practically naked. 



Skull. — Massive, as in the group generally; nasals tapering, 

 somewhat spatulate at the tips, tooth-rows slightly divergent, 

 mesopterygoid space elongate, bulb-shaped, not parallel-sided. 

 Palatal foramina rather short, bullse small, rather more flat- 



