. Bulletin - United States National Museum. Science. FRESH-WATER FISHES OF SIAM, OR THAILAND 81 Coloration: Bluish silvery; a glistening round black spot a little larger than pupil immediately behind head; a faint median dark stripe on back from head halfway to dorsal fin; back at base of dorsal and on upper part of caudal peduncle dark; dorsal and pectorals with blackish dots distally, caudal lobes dusky. Type.—A specimen (U. S. N. M. No. 107959), cm. long, was taken in the Pasak River at Pechabun, Central Thailand, February 23, 1934, by Luang Masya Chitrakarn. Remarks.—This fish is much
. Bulletin - United States National Museum. Science. FRESH-WATER FISHES OF SIAM, OR THAILAND 81 Coloration: Bluish silvery; a glistening round black spot a little larger than pupil immediately behind head; a faint median dark stripe on back from head halfway to dorsal fin; back at base of dorsal and on upper part of caudal peduncle dark; dorsal and pectorals with blackish dots distally, caudal lobes dusky. Type.—A specimen (U. S. N. M. No. 107959), cm. long, was taken in the Pasak River at Pechabun, Central Thailand, February 23, 1934, by Luang Masya Chitrakarn. Remarks.—This fish is much deeper in color than the Indian and Burman species O. cacMus., which it resembles in plainness of coloration and which, moreover, has 55 to 66 scales in the lateral line. It is like-. FiGURE 4.—Chela mouholi, new species: Type specimen (U. S. N. M. No. 107959). Drawn by Miss Jane Roller. wise a much deeper colored fish than C. lauhuca and differs otherwise in the features shown in the key. The closest relationship seems to be with C. caeruleostigmata., from which it may be easily distinguished by its squamation (scales in lateral line 31 as against 35, scales on trans- verse series 7-1-5 as against 9-1-3, scales around caudal peduncle 14 as against 12) and coloration. Named for A. H. Mouhot, intrepid pioneer explorer and zoological collector in the jungles of Eastern Thailand, 1858-60. He collected fishes in the type locality of C. mouhoti^ including a new species of Chela (i. e., Oocygaster) described by Giinther as siamensis. CHELA LAUBUCA (Hamilton) Cifprinus laubuca Hamilton, 1822, pp. 260, 384 (northern Bengal). Laubtcca siamensis Fowleb, 1939, p. 64, fig. 14 (Trang). The inclusion of this species of India, Burma, and Sumatra in the present catalog depends in part on the existence of a typical specimen. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illust
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