FRESH- WATER FISHES OF SI AM, OR THAILAND 163 



CIRRHINUS LINEATUS, new species 

 FiGUEE 25 



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

 peduncle 1.5 in its length and 2.5 in depth of body ; head 4.3, its width 

 1.25 in its depth and 1.7 in its length; snout 3 in head; eye 4.5 in head, 

 1.5 in snout, and 2.5 in interorbital space ; snout and top of head with 

 numerous minute pores and low papillae; width of mouth somewhat 

 greater than diameter of eye, lips thin and entire ; a pair of maxillary 

 barbels 0.25 length of eye concealed in postlabial groove. 



Squamation : Scales (tube-bearing) in lateral line 33, in transverse 

 series 5.5-1-3 to base of ventral, in predorsal region 10, surrounding 

 caudal peduncle 20 ; ventral axillary scale 2.5 in length of fin. 



Fins : Origin of dorsal fin far in advance of ventrals, over ninth scale 

 of lateral line; dorsal rays iii, 8, first branched ray as long as head; 

 caudal fin longer than head, equal to depth of body, deeply forked, lobes 

 pointed ; anal rays iii, 5, longest more than 0.5 head ; ventral fins 1.2 

 in pectorals, which are slightly shorter than head, pectoral rays i, 13. 





%^' 



Figure 25. — Cirrhinus lineatus, new species: Type (U.S.N.M. No. 107960). Drawn by- 

 Mrs. Alice C. Mullen. 



Coloration: Generally silvery white, back and top of head light 

 olive; five narrow, sharply defined blackish longitudinal stripes on 

 body, three above lateral line most distinct; a dark elliptical spot on 

 caudal peduncle at base of caudal fin ; edge of dorsal fin black, dorsal 

 membranes medianly blackish in their posterior half ; caudal fin dusky 

 green ; other fins pale greenish. 



Type and paratype. — The type (U.S.N.M. No, 107960), a specimen 

 14.9 cm. long, was taken in Lam Ton Lang, a tributary of the Menam 

 Sak, Central Thailand, July 19, 1925. U.S.N.M. No. 119484 is a para- 

 type. 



