26 ARKIV FÖR ZOOLOGI. BAND 10. N:0 26. 



nuicrodus Gray. by its small almost rudimentary claws. The 

 size is also less than in the other two speeies. 



5. Katufa iiielauopepla peiiinsula^ Miller. — 1 $ ^7i 

 1915. Nose to vent = 355 mm.; Ta il =- 428 mm.; Hindfoot 

 =- 78 mm. 



The mainland form of this beautiful Giant Squirrel has 

 long tiaie been referred to typical Ratufa melanopepla, the 

 type of which was considered to have been collected in the 

 Peninsula, viz. at Träng in Lower Siarn. However, Mr. Gerrit 

 Miller Jr. has latejy shown (Smithsonian Miscellaneous Collec- 

 tions, Vol. 61, No. 21, p. 25, 1913) that the type specimen was 

 obtained on Telibon Island and not on the mainland. The 

 insular race differs in sev^erai particulars — mainly by its 

 smaller size — from the mainland form, which therefore has 

 been given the na me of Ratufa i7iela7io2^epla peninsulce. 



In parts of Siam and in Tenasserim another allied form 

 occurs which has been named Ratufa pha^opepla Miller. 



Skull measurements: Greatest length -= 70,o; length 

 from condylus to gnathion = 64,6; basicraniai length = 60,2; 

 zygomatic width = 43, o; greatest breadth of brain case = 30,o ; 

 least interorbital width = 27,4; breadth between meatus audi- 

 iiva = 29,5; length of nasals mesially =^ 20, o; breadth of com- 

 bined nasals at anterior extremity == 12,5; breadth of com- 

 ])ined nasals at posterior extremit}^ = 6,s; diastema = 15, r>; 

 length of upper toothrow = 13, o mm. 



6. Sciurus prevostii huiuei Bonh. ~ 1 J -7* 1915. Nose 

 to vent = 265; Tail=-220; Hindfoot = 55 mm. 1 $ -'Vi 1915. 

 Nose to vent = 225; Tail = 250; Hindfoot = 55 mm. 1 $ ^-y^ 

 1915. Nose to vent = 255; Tail = 250; Hindfoot == 55 mm. 



The three specimens of this beautiful and variable Squirrel 

 all belong to the race which has been described by Bonhote 

 (Ann. & Mag. Nat. Hist., ser. 7, vol. 7, 1901, p. 170). The 

 type specimen came from Selangor, but this same race evi- 

 dently inhabits other districts in the Malay Peninsula. It 

 differs from typical Sciurus prevostii Desm, in having the red 

 colour of the lower parts of the body covering the whole of 

 the före limbs. This colour also is spreading upwards on the 

 shoulder where it meets the black colour of the back. Behind 



