FRESH- WATER FISHES OF SI AM, OR THAILAND 107 



10&. Black longitudinal band narrower and sometimes reduced to a 

 mere line, ending in a round or oval patch on caudal peduncle ; 

 a dark spot above base of anal ; scales in lateral line in reduced 



number, to 24 lateristriata sumatrana 



lOc Black longitudinal band rather narrow and continuous from head 

 to base of caudal fin and expanded at its posterior end ; a black 

 median stripe on lower edge of caudal peduncle extending for- 

 ward on each side of anal base, the caudal stripe sometimes 

 faint or absent, the basal stripe sometimes reduced to an elongate 



spot over anterior anal rays lateristriata trifasciata 



9c. Black longitudinal band very faint anteriorly, followed by a round 

 black spot smaller than pupil at base of caudal fin ; no dark median 

 dorsal stripe ; no median dark stripe on lower edge of caudal 

 peduncle ; no stripe or spot above base of anal fin ; pectorals as 

 long as head, rays ii,ll cheroni 



RASBORA HETEROMORPHA Dancker 



Rasbora heteromorpha Dunckek, 1904, p. 1S2 (Kuala Lumpur). — Hoka, 1924a, p. 

 469 (Tale Sap).— Smith, 1934b, p. 323 (Southeastern Siam), 



The occurrence of this diminutive species in the local fauna was first 

 made known by Hora, who reported eight specimens, none over 17 mm, 

 long, from the inner lake of the Tale Sap. The only other known 

 Thailand locality is a mountain stream on Kao Sabap, where the writer 

 has reported specimens taken during 3 years, up to an elevation of 2,000 

 feet. These fish, 19 to 30 mm, long, show the characteristic colora- 

 tion. One of the specimens, 30 mm. long, presented to the British 

 Museum, was compared by J. R. Norman with Duncker's types from 

 the Malay Peninsula and found to agree. Males, 30 mm, long, taken 

 July 12, 1928, have nuptial tubercles on the head. 



This is one of the most attractive of aquarium fishes and is now well 

 known in America and Europe from examples sent from Singapore, 



RASBORA BORAPETENSIS H. M. Smith 



Rasbora borapetensis Smith, 1934b, p. 302 (Bung Borapet). 



This is a rather small, very abundant species that has been found 

 chiefly in Bung Borapet but may be looked for in the rivers adjacent 

 to the outlets of the bung. It is readily distinguished from other local 

 species by the incomplete lateral line (which never extends beyond the 

 anal fin and covers at the most 14 scales), by the 12 rows of scales 

 around the narrowest part of the caudal peduncle, by the origin of the 

 dorsal fin well behind the ventrals, and by the coloration: a broad 

 black lateral band bordered above by a narrower golden-green band 

 extending from head to base of caudal fin, carmine basal half of the 

 caudal fin, a dark median dorsal stripe from head to caudal fin, and a 

 black stripe on each side of the anal base continued as a single stripe 

 on the under side of the caudal peduncle. Single specimens taken 



