FRESH-WATER FISHES OF SIAM, OR THAILAND 323 



In 1932 several specimens were received by the Siamese Bureau of 

 Fisheries from the Mesort, in Western Thailand, this stream being a 

 tributary of the Memue (which flows into the Sal win) and is not 

 remote from the source of Vinciguerra's material. Some of the Thai 

 specimens were sent to Dr. Hora, of the Indian Museum in Calcutta, 

 and were found by him and Dev Dev Mukerji to agree with a speci- 

 men from Burma sent by Vinciguerra; but both the Burmese and 

 the Thai forms were seen to differ from the incomplete description 

 of Day. The opinion of the Indian ichthyologists is that the Burmese 

 and Thai fish may bear the name N. multifasciatus pending the exami- 

 nation of typical Indian material adequate to establish the range of 

 variation, with the possibility that the Burmo-Siamese form may 

 prove to be entitled to specific rank. 



This is a medium-sized fish, the maximum reported length being 

 about 8.5 cm. The barbels are short, the maxillary pair being but 

 little longer than the diameter of the eye, the rostral pairs even 

 shorter. The lateral line is complete. The dorsal fin, with eight 

 branched rays, has its origin above or slightly in advance of ventrals 

 and midway between the tip of snout and the base of caudal fin. The 

 caudal fin, equal to or slightly longer than the head, is moderately in- 

 cised, with rounded lobes. The body is marked by numerous dark 

 cross bands, which are wider and about 5 in number, posterior to the 

 dorsal fin and very narrow, close together, and about 18 in number be- 

 tween the head and the posterior end of the dorsal base. A narrow 

 black transverse bar is at the base of the caudal fin. The dorsal and 

 caudal fins may have four or more lines of dark spots, and the anal 

 and ventral fins may have two dark bands. 



A female, 7 cm. long, from Pang Meton, with markings much less 

 distinct than in specimens which appear to be males, contains eggs 

 about 1.5 mm. in diameter. 



NOEMACHEILUS POCULI, new species 



FiGUKB 72 



Description. — Very elongate, body very slightly compressed ante- 

 riorly, more so in posterior half; greatest depth of body 6 times in 

 standard length ; caudal peduncle rather short, its least depth 1.6 in 

 its length and 2 in head ; a slight concavity at nape ; head moderately 

 depressed, its length 4.8 in standard length, 1.5 times its width, 1.7 

 times its depth; snout gently decurved, rounded, its Ipngth 2.5, in head; 

 eye in anterior half of head, 5 in head, 2 in snout, and 1.5 in inter- 

 orbital space ; mouth small, lunate, surrounded by fleshy lips, the lower 

 lip interrupted medianly, leaving exposed the sharp edge of the lower 

 jaw ; barbels short, but exceeding the diameter of the eye. 



