226 Messrs. H. C. Robinson andC. B. Kloss on 



flanks spreading on to the abdomen ; rest of the under 

 surface grizzled silvery-grey, a darker obsolescent median 

 stripe down the abdomen more yellowish. Tail coarsely 

 aunulated with black and buffy-white, the colour of the back 

 extending some distance down the basal portion above and 

 balo^v, pencil pure black. 



Skit/l and teeth. — Present no differential characters from 

 those of Sc. c. milleri, except the slightly larger size. 



Measurements. — Collectors' external measurements of type 

 (taken in the flesh) : — 



Head and body 226 (229*) ; tail 237 (214) ; hind foot 

 49-5 (48-0). 



Cranial measurements : greatest length 55 5 (54'3) ; con- 

 dylo-basilar length 47"9 (45'3); interorbital breadth 21-2 

 (i8-9); zygomatic breadth 33-2 (317); cranial breadth 24-4 

 (24'3) ; median length of nasals 16 8 (158) ; diastema 12'4 

 (11*3) ; upper molar series, including /»ot^, 11*1 (li'O). 



Specimens examined. — Thirty-five, all from the type- 

 locality. 



Remarks. — Somewhat closely allied to the adjacent main- 

 land form, but very constant in its characters. 



Sciut'us concolor samuiensis, subsp. n. 



Type. — Adult male (skin and skull), No. 201/13, Federated 

 Malay States Museum, collected on Koh Samui, N.lii. Malay 

 Peninsula, 13th May, 1913, by II. C. Robinson and E. 

 Seimund. Original no. 5341. 



Characters. — Allied to Sc. c. epomophortcsf from Salanga, 

 and ditt'ering from the preceding race {Sc. c. fallax) in the 

 much more strongly marked shoulder- and flank-patches 

 and in the rufous-hazel colouring of the base of the under 

 surface of the tail. 



Colour. — Upper surface much as in Sc. c.faJlax, but sides 

 of neck, flanks and lower portion of abdomen, back of thighs, 

 and base of tail beneath rufous-hazel. Outer surface of 

 thighs and nuchal region slightly suffused with the same 

 colour. Underparts much as in other forms of the species. 

 Tail with clear bla(;k pencil. 



Skull and teeth. — Do not differ from those of Sc. c. fallax. 



Mrasnreincnts. — Collectors' external measurements (taken 

 in the flesh) : — 



Head and body 234 mm. ; tail 242; hind foot, W). 



♦ Moasuremenls in parentheses are tliose of an adult male Sc. c. 

 milleri from Cliong, Trang, Western Siamese Malay States ; Federated 

 Malay States Miist'imi, No. 11/10. 



t Aui.liute, Ann. .t Mag. Nat. Flist. (7) vii. p. 27l> (li>01). 



