FRESH-WATER FISHES OF SUM, OR THAILAND 



PUNTIUS MASYAI. new species 

 FiGUBE 26 



171 



Description. — Moderately elongate, strongly compressed, depth of 

 body 2.8 in standard length, depth of caudal peduncle slightly less than 

 its length and 2.5 in head ; length of head equal to depth of body ; eye 

 about equal to snout, 3.5 in head and less than the flat interorbital space ; 

 mouth terminal, strongly arched, maxillary extending to a point under 

 anterior edge of eye; a pair of maxillary barbels 0.25 diameter of eye. 



Squamation : scales of lateral line 26, of which only the anterior 6 

 are tube-bearing; scales in transverse series from midline of back be- 

 fore dorsal fin to base of ventral 9.5; predorsal scales 9; circum- 

 peduncular scales 12. 



Fins : Dorsal fin emarginate, its origin over origin of ventrals, much 

 nearer to base of caudal than to end of snout, dorsal rays iii, 8, last 

 simple ray nonosseous, without serratures, 0.75 length of head ; caudal 

 fin about length of head, deeply forked, lobes sharply pointed; anal 

 emarginate, rays iii, 5, longest simple ray about 0.5 head ; ventral fins 

 extending on anal base, 1.5 in head, a small axillary scale; pectoral rays 

 i, 12, longest about length of ventrals and reaching to ventral origin. 



Ty^^^^ 



Figure 26. — Puntius viasyai, new species. Type (U.S.N.M. No. 107954). Drawn by 



Mrs. Alice C. Mullen. 



Coloration : Silvery ; a diffuse brownish area on shoulder ; a round 

 black spot, smaller than eye, on middle of caudal peduncle ; a sharply 

 defined ovate jet-black spot on basal part of anterior branched dorsal 

 rays ; fins otherwise hyaline. 



Type and paratype.—ThQ type (U.S.N.M. No. 107954) is 2.5 cm. 

 long, taken July 12, 1928, in a mountain brook at Ban Ang on Kao 

 Sabap, Southeastern Thailand. The paratype and only otlier speci- 

 men (U.S.N.M. No. 107955) is of the same size and was obtained at 

 the same time and place. 



