1860.] R°port on some Físhes received from the Sitang Eíver. 159 



Systomus (?) macularius, nobis, n. s. Aíñried to the preceding 

 in shape of head : the muzzle unusually prolonged anterior to the 

 nostrils, vvhere shewing a considerable concavity above. Body less 

 deep than usual ; its lower outline continued straight to the base of 

 the anal fin. Principal dorsal spine unusually large in every way, 

 and strongly pectinated behind : anterior to it are distinctly three 

 others, the first very minute : large anal and first ventral spines 

 passing gradually into soft rays towards their tips. Series of 35 or 

 36 scales along the lateral line, and of 12 obliquely downvvard from 

 base of dorsal spine. 



B. 4-8.— -4. 3-6.— P. 17.— V. 1-8.— C. 21. 



Colour palé olivaceous, deeper on the back ; each scale having a 

 distinct shining blackish spot at tip, less conspicuous on the brovvner 

 scales of the back ; fins palé ; the tail well forked. Length 6 in., 

 by lf in. high in the body ; of principal dorsal spine plus li in. 

 Tenasserim. 



S. duvaucelii ; Leuciscus Duvaucelii, Val., H. P. pl. 491. 

 Tenasserim. 



S. phutonio, ( ? B. H.) Five specimens, averaging lf in. long, a 

 trine more or less. 



D. 2-8 —A. 1-6. 



Fins spotless. A transverse black bar on the medial third of the 

 body, above the middle of the pectorals, and a broader black trans- 

 verse bar towards the tail, appearing generally as a round spot that 

 had run more or less above and below. From Maulmein. What 

 appears to be the same fish in Lower Bengal, I have never obtained 

 more than 1^ in. long, and the anterior transverse streak is invariably 

 longer and better defined, occupying the medial two-fifths of the 

 depth of the body above the middle of the pectoral fins. The fins 

 of the Tenasserim fish seem also to be proportionally larger. 



S. (?) unimaculatus, nobis, n. s. Species much resembling in 

 outline the Leuciscus cosuatis, (B. H., as figured by McClelland 

 by the ñame Systomus maculatus, As. Res. XIX, II, pl. XLIV, f. 9), 

 but the scales are proportionally smaller, and there are three distinct 

 spines to the dorsal fin, the principal one being very slender, smooth 

 or unserrated, and those of the anal barely recognisable as such. 

 Colour palé silvery-brown, with one great black spot on the dorsal 



y 2 



