52 MR. C, BODEN KLOSS ON 



not always to the liands. Tail averaging longer than head and 

 body, bicoloured with white tip. Hands and feet white. 



Skull and Teeth. — Resemble those of the typical race and show 

 no characters which will consistently serve to distinguish them 

 from it. 



Measurements. — Ear of type, 24-5 mm. For other measure- 

 ments see table, p. 73. 



Specimens examined. — Twenty-six : 3 from Ok Yam, 5 from 

 Klong Yai, and 18 from Klong Menao. 



Remarks. — The above series has been compared with a large 

 series of topotypes from Trang, Peninsular Siam, and also with 

 a number recently obtained in Bandon (about 100 miles to the 

 north of that locality), and distinctly differs as pointed out ; 

 though, as is always the case with two neighbouring continental 

 races, the extremes of the two series closely resemble each other. 

 The extension of the white area to the foot occui'S in the great 

 niMJoi-ity of examples from S.E. Siam, whereas in series from 

 Peninsular Sia.m the contrary is the case. 



E'pimtjs surifer has only previously been recorded from Siani 

 by Gyldenstolpe (Arkiv for Zoologi, Band 8, No. 23, p. 16, 1914), 

 who obtained a single example on the Korat Plateau. 



27. Epimys surifer changensis, subsp. n. 



Type. Aged male (skin and skdl), No. 1492/C.B.Iv. B.M. 

 No. 15.11.4.142. Collected on Ivoh Chang Id., S.E. Siam, 11th 

 December, 1914. 



Diagnosis. — Like E. s. finis, but with tail averaging shorter 

 than head and body, the dark speckle of the upper surface much 

 coarser and the white of the under parts more extensive ou 

 limbs, broadening, in some examples across the body and 

 spreading up the sides of the muzzle and over the upper side 

 of the foi'e limb. 



Measurements. — Ear of type, 25 mm. For other measurements 

 see table, p. 73. 



Specimens exainined. — Thirty-three from the type-locality. 



Remarks. — The tendency in this race to develop a white fore 

 limb and a. short tail approximates it to E. s. inanicalis Robinson 

 & Kloss *, from Koh Pennan on the opposite side of the Gulf 

 of Siam, from which, Jiowever, it is cleai'ly distinguished by its 

 much duller upper colour. 



28. Epimys surifer kutensis, subsp. n. 



Type. Aged male (skin and skull). No. 1710/C.B.K. B.M. 

 No. 15.11.4.151. Collected on Koh Kut Id., S.E. Siam, 25th 

 December, 1914. 



Diagnosis. — Like E. s. cha7i,gensis, but a trifle less tawny and 

 with less tendency for the white areas to increase (in this coming 

 iieai-er to the mainland form) ; anterior root of the zygomatic 



* Ann. Mag. Nat. Hist. ser. 8, vol. xiii. p. 230 (1914). 



