108 BULLETIN 188, UNITED STATES NATIONAL MUSEUM 



in the Menam Chao Phya at Nontaburi in September 1924, and in Nong 

 Samet near Chantabun in July 1928, agreed with examples from the 

 type locality. 



The maximum size attained appears to be under 5 cm. 



Fish taken from Bung Borapet to Bangkok proved active, attractive, 

 and hardy in small balanced aquaria, feeding on mosquito larvae and 

 minute crustaceans. The species should become a popular aquarium 

 fish. 



RASBORA PALUSTRIS, new species 



Figure 10 



Description. — Depth 3.6 in standard length; least depth of caudal 

 peduncle slightly less than its length and 2 in head ; head equal to body 

 depth ; snout blunt, rounded, gently decurved, 3.5 in head ; eye slightly 

 less than snout, 1.5 in interorbital space ; mouth small, maxillary not 

 extending to vertical from front margin of eye ; symphyseal knob of 

 lower jaw feebly developed. 



Figure \0.—Rashora palustris, new species: Type (U.S.N.M. No. 107956). Drawn by 



Miss Jane Roller. 



Squamation : Tube-bearing scales in lateral line about 23, extending 

 over posterior base of anal fin; scales between midline of back and 

 lateral line 4,5, a single scale between lateral line and base of ventral 

 fin; predorsal scales 13, circumpeduncular scales 14; thin scales ex- 

 tending far on caudal fin. 



Fins: Origin of dorsal fin over elcA^enth scale of lateral line, pos- 

 terior to base of ventrals, and somewhat nearer to base of caudal than 

 to tip of snout; dorsal rays ii, 8, longest equal to head less snout; 

 caudal fin about as long as head, deeply forked ; anal rays ii, 5, largest 

 1.5 in head; ventrals rounded, shorter than pectorals, rays ii, 8; pec- 

 torals rounded, shorter than head, rays i, 13. 



