20 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 79 



Type. — A specimen 12.8 cm. long taken near the headwaters of 

 Tadi Stream, in Ban Kiriwong, Province of Nakon Sritamarat, 

 Peninsular Siam, July 10, 1928. Cat. No. 90300, U.S.N.M. Paratype 

 No. 90301. 



Remarks. — This species has been compared with the known forms 

 of Gm^a from India and Burma as represented in the extensive 

 collections in the Indian Museum, Calcutta, and found to be quite 

 different therefrom. The pattern of coloration is especially charac- 

 teristic. 



No species of Garra has heretofore been reported from Siam. This 

 fish is not rare in mountain streams in the western part of the Pro- 

 vince of Nakon Sritamarat and may be looked for in other mountain- 

 ous regions of the peninsula. The maximum size attained appears ta 

 be about 15 cm. The local Siamese name for the fish in the type 

 locality is pla Im hin (stone-lapping fish). All of the fins have the 

 interradial dermal flanges which are seen in other mountain-stream 

 fishes of India, Burma, and Siam; their significance has not been 

 determined. 



EPALZEORHYNCHUS SIAMENSIS. new species 



Description. — Elongate, slightly compressed, greatest depth of 

 body 4.6 in standard length; least depth of caudal peduncle 1.5 

 in its length and 0.5 depth of body; head small, conical, its length 

 4.75 in length without caudal ; eye 4.25 in head, 2 in snout, 2 in con- 

 vex interorbital space; a pair of rostral barbels about 0.5 eye, no 

 maxillary barbels; upper lip long, deeply fringed with 15 well- 

 marked sections; lower lip with a few short papillae; scales in lat- 

 eral line 35, in transverse series 5.5-1-5.5, all scales marked by 

 numerous fine parallel horizontal lines; snout, top of head, and 

 upper lip thickly covered with minute low papillae. 



Fins: Dorsal fin in anterior half of total length, over ventrals. 

 dorsal rays iii,8, the longest ray exceeding depth of body; basal 

 part of dorsal rays with fleshy flanges; caudal fin much longer 

 than longest dorsal rays, deeply forked, lobes pointed; anal origin 

 midway between ventrals and base of caudal, rays ii,5, longest 

 branched ray equal to depth of body over anal fin; ventrals and 

 pectorals short, subequal. 



Color (in life) : Back and sides green with flecks of light blue 

 or purple; top of head bright green; a black lateral band as wide 

 as eye from head to base of caudal, continued to tip of middle caudal 

 rays; a narrow, silvery lateral band below the black band; under 

 parts white; dorsal, caudal, and pectorals very pale green; anal 

 and ventrals hyaline. 



Type.—K specimen 13.8 cm. long caught July 14, 1928, in a dip 

 net in the upper part of Tadi Stream, a mountain rivulet flowing^ 



