176 BULLETIN 188, UNITED STATES NATIONAL MUSEUM 



in Southeastern Thailand, by Luang Masya Chitrakarn, of the Siamese 

 Bureau of Fisheries. The hxrgest specimens are 5.5 cm. long. The 

 species is characterized by a pair of maxillary barbels, 26 scales in 

 the lateral line, ossified and serrated last simple dorsal ray, origin of 

 the dorsal fin over the eighth scale of the lateral line and much nearer 

 to tip of snout than to base of caudal fin, and four rounded black spots 

 along the side of the body, the first near the head, the last on the caudal 

 'peduncle, together with a small black spot on the back under the 

 anterior dorsal rays and a small black spot above the base of the 

 anal rays. 



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ia»f 



Figure 27. — Puntius siigmaiosomus H. M. Smith. Drawn by Nai Chote Suvatti; cour- 

 tesy of the Thailand Government. 



This species is close to Puntius binofatus, differing in the absence 

 of rostral barbels and in several other features. 



PUNTIUS SAMETENSIS, new species 



FiGUBE 28 



Description. — Body and head strongly compressed ; dorsal and ven- 

 tral profiles similar; depth 2.8 in standard length; length of caudal 

 peduncle equal to its depth, 1.5 in head ; head 3.6 in length ; eye 2.5 in 

 head, 1.5 times snout and interorbital space ; mouth terminal, strongly 

 arched, lips thin, maxillary not extending to vertical from anterior 

 edge of eye ; a pair of maxillary barbels 0.6 eye. 



Squamation : Lateral line complete, slightly decurved; scales in 

 lateral line 24, in transverse line from middle of back to base of ven- 

 trals 4.5-1-2.5, in predorsal region 9, circumpeduncular 12; a scaly 

 sheatli to dorsal and anal fins. 



Fins : Origin of dorsal fin about midway between tip of snout and 

 base of caudal fin, over eighth scale of lateral line and over origin of 



