MAMMALS FROM SIAM. 37 



blackisli, the crown more ocliraceous, the tail blacker, and the 

 sides and limbs more buffy, but no diflerence in tone between 

 the shoulders and rump ; shoulder-stripe conspicuous cream-bufF. 

 Chin, throat, chest, and median abdomen buff-yellow ; underside 

 of thi_^hs buffy-grey, of fore limbs buffy. Hairs of tail below 

 with two distinct buffy annula.tions and a narrow subterminal 

 one slightly deeper in shade. Ears dark. 



Skull and Teeth. — Do not differ from T. concolor except in 

 size. 



Measurements. — Ears of the series, 15-18 mm. For other 

 measurements see table, p. 68. 



Specmiens examined. — Seven, 4 males and 3 females, from the 

 type-locality. 



Remarks. — Only one island race of Tupaia,i\\e present form,wa,s 

 met with during the excursion, the family being unrepi-esented 

 on the large island of Koh Kut. T. c. sinus is a well-marked 

 insular race, clearly differentiated by smaller size, concolorous 

 doisal area, and conspicuous shoulder-stripe. 



11. Dendrogale FRENATA Gray. 



Tupaia frenata Gray, Ann. k, Mag. Nat. Hist. ser. 3, vol. vi. 

 p. 217 (1860). 



Dendrogale frenata de Pousai-gues, Mission Pavie, Indo-Chine, 

 Etudes Diverses, iii. p. 520 (1904); Bonhote, P. Z. S. 1907, 

 p. 8 ; Lyon, Proc. U.S. Nat. Mus. vol. xlv. p. 128 (1913). 



1 male, 1 female, Klong Menao ; 1 female, Klong Yai, S.E. 

 Siam. 



Recently Dr. M. W. Lyon has so carefully characterised this 

 species in his monograph on the Tupaiidfe [loc. cit. sicjjra), that 

 there is little more to add. His description, however, apparently 

 applies to the female, as the two examples of that sex now 

 obtained most closely a.gree with it, while the male is both lai-ger 

 and of richer colouring, with darker tail, the upper surface of 

 the body being more tawny, the under surface of a richer buff', 

 while the bright areas of the head are buff-yellow [Ridgioay 

 1912). These differences have not hitherto been properly 

 allocated, as the sex of the few specimens previously collected 

 was unknown. 



With regard to the head-markings, it maybe further noted : — 

 The black line through the eye is continued over the inner side 

 of the ear, and the buffy cheek-colour runs round the lower edge 

 of the ear to the back of this. There occurs also below tlie eye 

 a narrow black line running from the upper lip to the roots of 

 the cheek-vibrissfe. The buff of the thigh continues along the 

 outer side of the foot and spreads over part of its upper surface, 

 while the toes are largely buffy. 



Dr. Lyon remarks of this and the allied D. murina from 

 Western Borneo, tha,t their scarcity in collections may probably 

 be due to some peculiarity of habit making them difficult to 



