246 BULLETIN ISS, UNITED STATES NATIONAL MUSEUM 



midlength of head, 5 in head, 2 in snout, 2.5 in the strongly convex 

 interorbital space; teeth 5,4,2; gill rakers 5 + 22 on first arch. 



Squamation: Scales in lateral line 32 (including all that are tube- 

 bearing), in transverse series from midline of back to ventral fin 

 5.5-1-3, in predorsal region 11, around narrowest part of caudal 

 peduncle 16; ventral axillary scale about 0.3 length of first branched 

 ray. 



Fins: Dorsal arising in advance of ventrals, midway between tip 

 of snout and posterior base of anal, over ninth scale of lateral line ; 

 dorsal rays iii,8, longest branched ray shorter than head; caudal 

 forked, about as long as head; anal rays iii,5, longest branched ray 

 about 1.5 in head; ventral somewhat shorter than pectorals, which 

 are slightly shorter than head; pectoral rays i,14. 



Figure 45. — Lobocheilus cheveyi, new species: Type (U.S.N.M. No. 107947). Drawn by 



Miss Jane Roller. 



Coloration : Upper half of head and body dark olive, underparts 

 whitish; a jet black median lateral band from head to base of caudal, 

 the band anteriorljr involving parts of two rows of scales and pos- 

 teriorly parts of three rows ; scales of body with dark edges ; anterior 

 margin of dorsal fin from base to tip black, rays greenish, membranes 

 mostly blackish ; caudal dull green, with the black lateral body band 

 extending on median rays ; other fins plain. 



Type.—TYiQ type specimen (U.S.N.M. No. 107947), 12.1 cm. long, 

 was collected by H. G. Deignan, December 25, 1936, in the Menam Mao, 

 a tributary of the Menam Fang, Northern Thailand. 



Remarks. — This form presents a combination of characters by 

 which it appears to be distinguished from other species known from 

 Thailand and adjacent countries. The most prominent of these 

 characters are the comparatively few scales in the lateral and trans- 

 verse series, the single pair of barbels, rather slender body, obliquely 

 truncate snout, and distinct coloration, the lateral black band being 

 wide and sharply defined. L. ho, with essentially the same squama- 



