326 BULLETIN 188, UNITED STATES NATIONAL MUSEUM 



Huey Lorn, another tributary of the Menam Nan, June 1 to 3, 1936, 

 of which the two smallest have a preorbital hook and are males, while 

 the largest has no hook and is a female with nearly ripe eggs. 



This is a very distinct species, at once recognizable by its slender 

 form, long barbels, cartilaginous hook in the male extending back- 

 ward from the preorbital, high dorsal fin, strongly forked caudal fin 

 with pointed lobes, of which the upper is much longer, and peculiar 

 pattern of coloration : a series of 14 to 20 dark brown saddles extend- 

 ing from back downward toward lateral line, the same number of 

 dark brown spots along lateral line, and a small, round jet-black spot 

 at base of caudal rays surrounded by a pale yellow area. The long 

 barbels, preorbital hook, and deeply forked caudal fin induced Fowler 

 (1937) to establish the subgenus Pogononemacheilus for this species. 



Figure 73. — Noemacheilus masyae H. M. Smith. Drawn by Luang Masya; courtesy 



of the Thailand Government. 



The type (U.S.N.M. No. 107954) is 6.8 cm. long and is a male with 

 preorbital hook. The largest known specimen is a female, 8 cm. long, 

 with well-developed ova, from a waterfall stream near Chantabun. 

 The National Museum collection contains paratypes (U.S.N.M. Nos. 

 109720,109753). 



NOEMACHEILUS TRANSLINEATUS Fowler 



Nemacheilus trans-Uneatus Fowler, 1939, p. 63, fig. 13 (Trang). 



This species is described from three specimens, 6.8, 6.5, and 6.1 cm. 

 long, from a waterfall stream near Trang, and is peculiar in having 

 the general coloi- brown, with light cross bands. The deeply forked 

 caudal fin, with pointed lobes, is another outstanding feature. 



NOEMACHEILUS BUCCULENTUS, new species 

 FiGUEE 74 



DescHptio7i. — Elongate, body moderately compressed posteriorly to 

 origin of dorsal fin, depressed anteriorly; dorsal profile from head to 

 caudal fin curved very slightly upward to and downward from dorsal 

 fin^ ventral profile straight and flat ; depth 5.2 in standard length ; cau- 



