FRESH-WATER FISHES OF SIAM, OR THAILAND 179 



Fins : Dorsal fin. arising over sixth scale of lateral line, nearer to tip 

 of snout than to base of caudal fin ; dorsal rays iii, 9, last simple ray 

 osseous, slender, nondenticulated, its length less than head; caudal 

 fin longer than head, forked for 0.5 its length ; anal rays iii, 5 ; ven- 

 trals arising under seventh scale of lateral line, reaching anal opening, 

 0.5 length of head, rays i, 8; pectorals extending to base of ventrals, 

 0.75 length of head, rays i, 14. 



Coloration : Silvery ; scales of back and side with a dark basal cres- 

 cent ; body otherwise plain ; fins hyaline. 



Tyye and paratypes.—T\\e type (U.S.N.M. No. 119713) 5.5 cm. 

 long, and 3 paratypes (Nos. 119501, 119502) 4.5 to 5.3 cm. long, were 

 collected on July 20, 1928, on Kao Luang, Nakon Sritamarat. 



Remarks. — This little fish has been met with only in a brook near 

 the base of the lofty Kao Luang, at a point about 1,000 feet above 

 sea level, and in the gorge of the jSIechem, in Northern Thailand. 

 From the later locality a single specimen, 5.1 cm. long, was obtained 

 by A. E. Buchanan and P. D. Harrisson in July 1935. 



The fish is easily recognizable by the possession of only 22 tubule- 

 bearing scales in the lateral line and only 6.5 scales in transverse series 

 to the base of the ventral fin, with 7 predorsal and 12 circumpeduncular 

 scales, in combination with two pairs of well-developed barbels and 

 an osseous but nondenticulated last simple dorsal ray. 



Among local species P. colemani (Fowler) , from Mepoon, in Cen- 

 tral Thailand, is the closest relative. In that species the scales with 

 lateral-line-bearing tubules number 29, the scales in cross series num- 

 ber 9, and the predorsal scales number 9; and the tips of the dorsal 

 and caudal lobes are sharply defined in black. Among species known 

 from surrounding countries, the closest resemblance seems to be found 

 in P. stracheyi (Day), described from Burma, in which the lateral- 

 line scales are given as 23 although Day's figure shows 25, the dorsal 

 fin has 9 branched rays, the barbels are longer than the diameter 

 of the eye (the maxillary about twice the eye diameter), the body 

 and head are larger, and the eye is smaller (5 in length of head, 1.5 

 in snout, and 2.5 in interorbital space) ; some of these differences, 

 however, might be due to age, and a comparison of specimens of 

 P. stracheyi and P. faucisquamatus of similar size is desirable in 

 order to establish the validity of the latter. 



PUNTIUS COLEMANI (Fowler) 



Barhus colemani Fowleb, 1937, p. 197, figs. 159, 160 (Mepoon). 



The type and only specimen known to the describer was 8 cm. long, 

 from the Mepoon, Central Thailand, with 2 pairs of barbels, shorter 

 than eye, 29 scales in the lateral line, last simple dorsal ray osseous and 

 nondenticulated, and tips of dorsal fin and caudal lobes black. A 



