154 BULLETIN 1S8, UNITED STATES NATIONAL MUSEUM 

 ROHTEE ALFREDIANA (Cuvier and Valenciennes) 



Leuciscus alfredianus Citpier and Valenciennes, vol. 17, p. xvi, pi. 488, 1844. 

 Leuciscus duvaucelii Cv\ier and Valencien^^es, vol. 17, p. 77 (not p. 95), 1844 

 ("Nepaul"). 



This widely distributed fish of India and Burma has not heretofore 

 been recorded from Thailand but was, of course, to be expected in the 

 Salwin Basin. Two specimens 7.5 and 7.7 cm. long were taken by 

 the writer January 23, 1933, at Mesarieng, in the Meyuam, a tributary 

 of the Salwin. 



Day (1878) gave the lateral-line scales as 55 to 70 in E. cotio, of 

 which he regarded alfrediana as a variety, but his plate of the latter 

 shows 45 scales as in the Thailand specimens at hand. , 



In India the fish attains a length of 15 cm. or more. 



Genus BARILIUS Hamilton 



Barilius Hamilton, Fishes . . . River Ganges, p. 384, 1822. (Type, Cyprinus 

 barila Hamilton.) 



The bariliids are conspicuous in the fauna of India, Burma, and 

 Thailand but are lacking in the Indo-Australian Archipelago. They 

 are for the most part fishes of hill or mountain streams, although some 

 species inhabit lowland w^aters. In life they are silvery and usually 

 have dark spots or bands on the body. 



Eight species, as keyed below, are definitely recognized in Thailand ; 

 several others have an uncertain status. 



la. Two pairs of barbels (rostral and maxillary). 

 2a. Scales in lateral line 31 ; scales between midline of back and lateral line 

 6.5 or 7.5 ; scales between lateral line and origin of ventral fin 3 ; predorsal 

 scales 17; circumpeduncular scales 12 ; origin of dorsal fin well in advance 

 of anal ; barbels less than 0.5 eye ; body with 6 or 7 irregular blue-black 

 cross bands, a large black blotch on caudal peduncle at base of fin, a 



black spot on midlength of anterior dorsal rays bernatziki 



2b. Scales in lateral line 32 to 37. 

 3a. Scales in lateral lines 32 to 34 ; scales between midline of back and lateral 

 line 6.5; scales between lateral line and base of ventral fin 2.5; pre- 

 dorsal rays 17 or IS ; circumpeduncular scales 14 ; rostral barbel 0.75 

 diameter of eye ; origin of dorsal fin slightly in advance of anal fin, 

 midway between tip of snout and posterior end of central caudal rays ; 

 dorsal rays iii, 7; about 9 black spots along side of body, the anterior 



spots taking form of vertical stripes nanensis 



36. Scales in lateral line 35 to 37; scales between midline of back and lateral 

 line 7.5 ; scales between lateral line and origin of ventral fin 1 ; predor- 

 sal scales 10; circumpeduncular scales 12; rostral barbel 0.2 diameter 

 of eye ; origin of dorsal fin far in advance of anal, midway between 

 tip of snout and base of caudal fin ; dorsal rays iii, 7 or iii, 8 ; 12 to 14 

 narrow blackish vertical stripes crossing a black stripe extending from 

 head to base of caudal fin huahinensis 



