440 BULLETIN 188, UNITED STATES NATIONAL MUSEUM 



■,-%'0^' -■ :■'■ \:^!?%* 



y:;^ 





Figure 96. — Synaptura aenea H. M. Smith. Drawn by Nai Chote Suvatti; courtesy 

 of the Thailand Government. 



a connection through a folded membrane with the upper part of 

 the branchiostegal membrane." 



Genus ACHIROIDES Bleeker 



Achiroides Bleeker (35) (38), Nat. Tijdschr. Nederl.-Indie, vol. 1, pp. 262, 404, 

 1851. (Type, Plagusia melanorhyncTius Bleeker.) 



In this genus the pectoral fins are entirely absent. 



ACHIROIDES LEUCORHYNCHOS Bleeker 



Achiroides leucorJiynchos Bleekee (38), 1851, p. 411 ( Surakarta, Java). 



Previously known only from a river in Java, this species was found 

 in Klong Sok, an affluent of the upper Tapi, in the Bandon district of 

 Peninsular Thailand, in December 1929 by K. Havmoller, who pre- 

 sented a specimen to the Siamese Bureau of Fisheries. This specimen, 

 7.7 cm, long, with lateral line 67, dorsal rays 54, anal rays 42, agreed 

 fairly well with Bleeker's description and plate. In 1937 Herre and 

 Myers recorded the species from the coast of Sumatra. 



In this species the upper side has in its general brown color a white 

 area behind and above the angle of the mouth. 



Family CYNOGLOSSIDAE: Soles 

 Genus CYNOGLOSSUS Hamilton: Tonguefishes 



Cynoglossus Hamilton, Fishes . . . River Ganges, pp. 32, 365, 1822. (Type, 

 Cynoglossus lingua Hamilton.) 



All the local representatives of this family belong in the genus 

 Cynoglossus^ which has sometimes been split into genera or subgenera 



