64 MR. C. BODEX KLOSS ON 



atlases sufficiently*. Thus, Siracha in S.E. Siam, about 40 miles 

 S.E. of Bangkok, is regarded by Lydekker as practically the type- 

 hjcality of T. ravus Miller (= T. h. ajjinis of Lydekker), which 

 came from Trang in Peninsular Siam, about 400 miles south of 

 Bangkok. The outcome is that T. k. ccfflnis is given a distribu- 

 tion from Pahang, Malay States, north to Moulmein in Tenas- 

 serim, and thence east to Annam, while T. k. pierrei Bonhote 

 (= T. k. affinis Gray), which name is accepted by Lydekker, is 

 supposed to extend from Lower Cochin-Ohina west to Siam, 

 thus making two subspecies of the same species exist side by 

 side ; whereas inter se ravus and affinis are two well-defined 

 forms, the one spreading from the middle of the Malay Peninsula 

 and the other from Cambodia, the line where they intergrade 

 being still not clearly known. 



In similar fashion Lydekker extends T. javaniciis napu F. Cuv., 

 of Sumatra, up the Malay Peninsula, from Selangor to Southern 

 Tenasserim, and at the same time places in an intermediate 

 position, Trang ranging southward, T. j. canescens Miller. 

 While it is highly probable that the latter name will have to 

 be regarded as synonym of the other, yet while the subspecies 

 are excepted the allocation of specimens to them results in an 

 impossible distribution. 



45. Sus CRisTATUS, subsp. 



Sus (?) Gray, P. Z. S. 1861, p. 139. 



Sus cristatus de Pousargnes, Mission Pavie, Indo-Chine, 

 Etudes Diverses, iii. p. 535 (1904). 



An immature female, with posterior molars not up and one 

 milk-incisor still present, was shot on Koh Chang Id. 



The stronglj^-marked crest is tipped throughout with light 

 isabelline, and there is a patch of clearly defined white bristles 

 at the angles of the mouth, a number are scattered over the 

 lower abdomen and in fewer quantity on the throat and chest. 

 The prevailing colour is black, clear on the cheeks and shoulders, 

 fore and lower hind limbs; but the forehead, sides, and thighs 

 are annuiated with buffy and white. The greater part of the 

 inner surface of the ears is covered with white hairs, and the 

 fringe along the edge is very short. 



* To avoid similai' confusion in futui'e, I suggest tlie use of the following divisions 

 for Siam ; — 



(i.) Northern Siam : the mountainous countrj' north of the Thoungj'in River- 

 mouth and the great bend of the Mekawng (about Lat. 18° N.) 

 (ii.) Central Siam : the great plain, south of (i.), watered bj'the Menam and its 

 tributaries and by the Baugpakong and the lower Mekawng and Petcha- 

 buri Rivers, 

 (iii.) Western Siam : the hill country between the Menam plain and the 



Tenasserim Boundary, south to about Lat. 12° N. 

 (iv.) Peninsular Siam : the Malay Peninsula south of (iii.) to the Protected 



Malay States, 

 (v.) Eastern Siam : the " Korat Plateau " east of (ii.), drained by the tributaries 



of the Mekawng. 

 (vi.) South-eastern Siam : the coastal country south of the Baugpakong basin 

 and the Battambong-Cambodian frontier, drained by streams running 

 into the Gulf. 

 (For fuller details see Journ. Nat. Hist. Soe. Siam, vol. i. jiart 4, 1915.) 



