MAMMALS FROM SIAM. 33 



out, and the tips of the pterygoids farther apart (36 : 33 mm.). 

 The ascending ramus of the mandible is steeper, being both 

 higher and narrower, with the sigmoid notch less broad ; a line 

 passing down the back of the condyle and angle of the mandible 

 is a,lmost perpendicular to the plane of the base of the mandible 

 in P. ge?^mai)d, while in its subspecies, at their junction, these 

 planes form an acute angle only. 



Measurevients*. — External measurements, taken in the flesh: 

 total length, 1260 (1300) mm.; tail from angle formed with 

 rump above, 720 (755); head to vent, 540 (570); hind foot, 

 160 (160); ear, 40 (42). Skull: greatest length, 99-5 (106); 

 basal length, 72*5 (80); zygomatic breadth, 77(78); maxillary 

 tooth-row, 35(36); greatest length of mandible, 73 (81): per- 

 pendicular height of coronoid process, 47 (44): perpendicular 

 height of condyle, 44 (42) ; breadth of ascending ramus from 

 anterior root opposite centre of m^ to angle, 32 (34) ; coronoid 

 process to back of condyle mesially, 16 (18"5). 



Specimens examined. — Seven (the t^'pe, 3 adult females, 2 im- 

 mature females, 1 male juv.)t. 



Remarks. — Though, as listed above, I have only one adult 

 male from the mainland for compaiative purposes, I have re- 

 garded it as a typical example, and while the above details record 

 diflerences between it and the insular male, the characters of the 

 latter are completely confirmed by the remainder of the series 

 from Koh Chang. 



The colour of the infant male is ochraceous orange above, 

 ochraceous buft" below, with traces of darkening on forehead, 

 temples, and tip of tail. 



The two immature females, both partially retaining their 

 milk-dentition, resemble adults in every respect in colour of 

 pelage. No form of Preshyt/is occurs on the neighbouring laige 

 island, Koh Kut. 



6. Paradoxurus hermaphroditus Pall. 



Viverra hermajyhrocUta Pallas, Schreber, Siiugeth. iii. p. 426 

 (1778). 



Paradoxurtis jxMasii Gra}^, P. Z. S. 1861, p. 136. 



Paradoxurus hertnaijhroditus Flower, P. Z. S. 1900, p. 329 ; 

 de Pousargues, Mission Pavie, Tndo-Chine, Etudes Diverses, iii. 

 p. 522 (1904). 



A half-grown fenaale was obtained on Koh Chang Id. which 

 differs from P. m. kutensis in its lighter, more bufiy colour, 

 narrower stripes, and paler shoulders ; the muzzle and extremities 

 are less black, and the chest is darker ; a broad pale band extends 

 uninterruptedly across the forehead, much reducing the brownish 

 area on the top of the head. Save for this latter, it appears to 

 bear some likeness to P. cochinensis of Cochin-Ohina (Schwarz, 



* Measurements in parentheses those of an adult male from the adjacent main- 

 land. No. 1839/C.B.K. 

 f See table, p. 67. 



Proc. Zool. Soc— 1916, No. III. 3 



