Mammals from the Johore Archipelago. 593 



I7emarks. — Though Pulau Dayang is separated from 

 Pulau Aor by a channel which is little more than a quarter of 

 a mile wide, there is a nuiiimum depth of twenty-five fathoms 

 between the two islands, and it is unliliely that any inter- 

 communication can take place between the races of squirrels 

 and rats found on either side of the strait. The ten speci- 

 mens from Pulau Dayang when mixed with thirty from 

 Pulau Aor can be picked out without the slightest difficulty 

 by any person able to appreciate marked differences in tint. 

 The affinities of the present form and Sc. v. tenuirostris 

 inhabiting Tioman are decidedly with the mainland races, 

 Avhile those of Sc. c. aoris and Sc. v. pemangilensis are rather 

 with those inhabiting the Natiuias and Anambas. 



Epimys surifer pemangilis. subsp. n. 



%;^.— Adult male (skin and skull), No. 447/12, Selangor 

 Museum, collected on Pulau Pe.'nanggil, Johore Archipelago, 

 South China Sea, 16lh June, 1912, by Museum Collectors. 

 No. 4999. 



Characters. — In size about equal to E. s. grandis and 

 E. s.flavigraadis* (Kloss), but much brighter in colour than 

 eitlier of these races, young and unabraded specimens 

 approaching E. s. leonis f from Singapore in clearness of 

 tint. 



Colour. — Upper parts ochraceous orange, brightest on the 

 flanks, nape, and limbs, darkened on the shoulders, back, and 

 rump witii the brown tips of the spines. Upper part of the 

 head, muzzle, and patches round the eyes earthy brown. 

 Cheeks and sides of the head pale yellowish buff, not whitish 

 at the base o£ the vibiissce, which are dark brown, paler at 

 the tips. Hands and feet whitish, without darker stripe, 

 sharply defined in the case of the feet from the colour of the 

 limbs. Beneath white, this colour continued as an ill-defined 

 stripe on the outer side of the leg and the inner side of the 

 arms to the ankles and wrists. Tail black above and at the 

 tip, whitish beneath. 



Shidl and teeth. — Skull stout and heavily built as in 

 E. s. grandis and E. s. jlavigrandis, but with the rostrum 

 rather more slender and the nasals narrower than in these 

 races. Anterior edge of infraorbital plate sloping slightly 

 forwards. Palatal foramina rather- longer and broader and 

 bullse smaller and flatter than in any of the other forms. 

 Teeth with no differential characters. 



* Ann. & Map^. Nat. Hist. (8) vii. p. 119 (1911) ; Jouru. Fed. Malay 

 States Mus. iv. pp. 209-211 (1911). 



t Journ. Fed. Malay States Mus. iv. p. 170 (1911). 



