214 BULLETIN 188, UNITED STATES NATIONAL MUSEUM 



ing far behind the dorsal fin in O. mttatu^s) , in the more complicated 

 lips, and in coloration. 



OSTEOCHILUS HASSELTH (Cuvier and Valenciennes) 



Figure 37 



Rohita hasseltii Ctjvieb and Vai.knciennes, 1842, vol. 16, p. 274 (locality not 



given). 

 Rohita (Rohita) hasaelt i Blekker, 18G5 (347), p. 35 (Slam). 

 Rohita (Rohita) hasseltii Bleekek, 1865 (356), p. 175 (Siam). 

 Osteochilus hasseltii Sauvage, 1883b, p. 152 (Meuam Chao Phya ) .^Fowlek, 



1934a, p. 115 (Chiengmai, Chautabun) ; 1935a, p. 115 (Bangkok) ; 1939, pp. 41, 



45 (Huey Yang and Krabi). 

 Osteochilus hasselti Weber and de Beaufort, 1916, vol. 3, p. 135 (Siam). — Hoba, 



1924a, p. 470 (Tale Sap). 



One of the commonest and most widely distributed osteochilids in 

 the rivers and lakes of the large islands of the East Indies (Java, Bor- 

 neo, and Sumatra), this fish occurs also in Jahore, Malacca, Pahang, 

 and other Malay States, and it is found throughout the length and 

 breadth of Thailand with the exception of the waters of the Mekong 

 drainage and of the Bay of Bengal watershed, from which no speci- 



FiGURE 37. — Osteochilus hasseltii (Cuvier and Valenciennes). Drawn by Luang Masya; 

 courtesy of the Thailand Government. 



mens have as yet been reported. Inasmuch as the writer found the 

 fish very abundant in the Seamreap River, Cambodia, an atiluent of 

 tliB' Tonle Sap, it undoubtedly occurs in the Mekong and will even- 

 tually be reported from the Thialand side of that great boundary 

 river. Definite records for Peninsular Thialand are the Patani River, 

 Bajo Avaterf all, and Bukit in Patani Province ; the inner lake of Tale 

 Sap and various streams in Nakon Sritamarat; and the Tapi River 

 near Bandon. In the Central area the fish is known from the Mekling, 

 Menam Chao Phya, and other streams, and Bung Borapet. The fish 

 as been taken in the Meping at Chiengmai in Northern Thialand, 



