276 BULLETIN 188, UNITED STATES NATIONAL MUSEUM 



by Luang Masya; and one specimen from the Prau Kiver at Pak 

 Thawan, Southeastern Thailand, April 1, 1931, collected by Layang 

 Gaddi. These specimens were examined by Dr. Hora and found to 

 agree with Dr. Vinciguerra's typical examples of Helgia modesta from 

 Burma, collected in the Meetan and the Meekalan, mountain streams 

 flowing westward from the Siam-Burmese frontier into the Houng- 

 darau River. 



HOMALOPTERA SMITHI Hora 



Figure 54 



Homaloptera smithi Hoea, 19S2, p, 286, pi. 11, fig. 3 (Peninsular Siam). — Fowlee, 

 1934a, p. 98 (Bua Yai, Metang River, Chiengmai, Chantabun) ; 1939, p. 58 

 (Trang). 



In the upper part of the Tadi River, at Ban Kiriwong, in the 

 Province of Nakon Sritamarat, Peninsular Thailand, this little species 

 was found to be common, and 19 specimens, the largest under 7 cm. 

 long, were collected and preserved on July 10 and 12, 1928. The species 

 has since been found to occur in Northern, Eastern, and Southeastern 

 Thailand as well as in other parts of Peninsular Thailand. A series 

 of 105 specimens 2 to 3.4 cm. long was reported by Fowler from the 

 Meping at Chiengmai and another series of 210 specimens 2.9 to 6.5 

 cm. long from the waterfall stream in Trang. A single specimen 3 

 cm. long was collected by Deignan in the Meping at Chiengmai in 

 April 1935. A paratype is U.S.N.M. No. 109821. 



-r-yTT' 



Figure 5i—HomalopUra sviithi Hora: U. S. N. M. No. 109821. Drawn by Miss Jane 



Roller. 



Dr. Hora observed that this species "is distinguished from the other 

 species of the genus by the following combination of characters : the 

 Balitora-like general facies, the broad and extensive paired fins, the 

 large eyes, the forward position of the ventrals which do not reach the 

 anal opening, the shovellike lower jaw and the lepidosis. The coloring 

 as well as the nature of the labial grooves are also characteristic of 

 the species." 



