. Bulletin - United States National Museum. Science. FRESH-WATER FISHES OF SIAM, OR THAILAND 229 four times or a little more in the standard length as compared with a head to times in the length in Z. leptocheiliis. This difference was insisted on by Bleeker and is well shown in the plates in his Atlas. Genus AMBLYRHYNCHICHTHYS Bleeker ArnblyrJiynchichthys Bleeker (261), Nat. Tijdschr. Nederl. Indie, vol. 20, p. 430, 1859. (Type, Barhus truncntus Bleeker.) • AMBLYRHYNCHICHTHYS TRUNCATUS (Bleeker) Figure 41 Barbus truncatus Bleeker, 1851 (26), p. 13 (Bandjermassing, Borneo). AmltlyrTiyn
. Bulletin - United States National Museum. Science. FRESH-WATER FISHES OF SIAM, OR THAILAND 229 four times or a little more in the standard length as compared with a head to times in the length in Z. leptocheiliis. This difference was insisted on by Bleeker and is well shown in the plates in his Atlas. Genus AMBLYRHYNCHICHTHYS Bleeker ArnblyrJiynchichthys Bleeker (261), Nat. Tijdschr. Nederl. Indie, vol. 20, p. 430, 1859. (Type, Barhus truncntus Bleeker.) • AMBLYRHYNCHICHTHYS TRUNCATUS (Bleeker) Figure 41 Barbus truncatus Bleeker, 1851 (26), p. 13 (Bandjermassing, Borneo). AmltlyrTiynchichthys truncatus Bleeker, 1865 (356), p. 176 (Siam).—Weber and de Beaufort, 1916, vol. 3, p. 105 (Siam).—Hora, 1923b, p. 153 (Bangkok).— Fowler, ll»34a, p. 115 (Chiengsen) ; 1937, p. 174 (Bangkok, Mepoon, Kema- rat) ; 1939, p. 44 (Krabi). AmUyrhynchithys truncatus Sauvage, 1883b, p. 152 (Menam Chao Phya). This species, occurring in Borneo and Sumatra, is fairly common in streams in Central Thailand. It has been noted in the Menam Chao Phya from Bangkok to Paknampo, in the lower Menam Nan and Bung Borapet, in the Menam Pasak at Dha Luang, and in the Meklong at Kajaburi. The only record of the fish in Peninsular Siam is for the Tapi River near Bandon, where the writer collected a number of speci- mens in September 1923. More recently H. W. Fowler reported the fish from the Mekong at Kemarat. The British Museum contains a number of specimens from tlie Menam Chao Phya, gift of the Siamese Figure 41.—Amblyrhynchichthys truncatus (Bleeker). Drawn by Nal Chote Suvatti; courtesy of the Thailand Government. 590087—45- Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Insti
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