no. 1809. MAMMALS FROM BORNEO AND VICINITY— LYON. 93 



color to the base of whiskers in Mtiller's plate. The grizzling seen 

 along the edge of the dorsal stripe in the plate is less noticeable in 

 the specimens. 



Regarding the type-locality of this species, Mr. Gerrit S. Miller, jr., 

 who examined in Leiden, in 1904, the type, an adult male mounted, 

 remarked: "No locality can be given beyond southeastern Borneo, in 

 the low country." 



(For measurements, see table, p. 96.) 



RATUFA COTHURNATA, new species. 



Type. — Skin and skull of adult female, Cat. No. 145378, collected 

 at foot of Mount Palung, near Sukadana, western Borneo, February 

 9, 1907, by Dr. W. L. Abbott. Original number, 5537. 



Diagnostic characters. — A member of the ephippium group, dif- 

 fering from true ephippium in having the dark dorsal area less 

 sharply defined and general coloration not so bright, most closely 

 related to Ratufa ephippium baramensis Bonhote, 1 but differing in 

 having the thighs concolor with under parts of body. 



Color. — Type: Upper parts of head and body a mixture of tawny 

 ochraceous and blackish, the former more conspicuous anteriorly 

 and laterally, the latter more prominent in the dorsal line and pos- 

 teriorly. The mixture occurs as a grizzle, except over the shoulders, 

 where the tawny-ochraceous is essentially clear and unmixed, and 

 on the lower back, where the blackish is unmixed and spreads out 

 laterally nearly as far as the femoral spots. On the head between 

 the ears the blackish is quite pure. Cheeks and sides of neck rather 

 dark tawny-ochraceous. Under parts buff or buffy. Fore and hind 

 legs and feet buff to ochraceous-buff, the inner sides of the legs 

 lighter than the outer. General color of tail above blackish, the 

 bases of the hairs whitish, marginal portions of under side of tail 

 blackish ; central portion, including short appressed hairs, ochraceous- 

 buff. Ears inside and out dull ochraceous. The type is one of the 

 brightest and freshest-looking in the series. The majority of speci- 

 mens are duller and lighter in color, the tawny-ochraceous becoming 

 ochraceous-buff or buffy and the under parts correspondingly lighter, 

 the blackish becoming brownish. One specimen, Cat. No. 145381, 

 from Kumbang River, is very much bleached and worn, the pelage 

 in places having a singed appearance. 



Skull and teeth. — Apparently there are no characters by which the 

 skulls and teeth of R. cothurnata can be distinguished from those of 

 R. ephippium. 



Measurements. — The external and cranial measurements of R. 

 cothurnata are essentially the same as they are in R. ephippium, the 

 hind foot and greatest length of skull averaging, however, a trifle 

 less. The hind foot in R. cothurnata ranges from 81 to 87 mm. and 



i Ann. Mag. Nat. Hist., ser. 7, vol. 5, p. 496, June, 1900. Type-locality, Baraia district, Sarawak. 



