FRESH-WATER FISHES OF SIAM, OR THAILAND 



401 



approximately reaching origin of anal, less than two-thirds length of 

 pectorals, ventral rays i, 6; pectoral rays I, 7, the spine strong and 

 coarsely denticulated, longest rays about 0.8 head and equal to depth of 

 body. 



Coloration : Upper part of body and head rich reddish brown, ab- 

 domen and underside of head pale yellow; a few small round black 

 spots on side, most numerous on caudal peduncle ; lateral line whitish ; 

 dorsal fin black, with a narrow white edge and a median white bar 

 extending from posterior border of fin forward and upward about 

 halfway to anterior border ; caudal fin reddish brown, with small black- 

 ish spots, upper and lower edges with white areas, tips of lobes white, 

 and a white U-shaped area involving the central part of the fin ; anal 

 fin white, with a blackish brown base and an isolated brown spot on 

 median part of anterior rays; ventral white; pectoral whitish, anterior 

 rays obscurely mottled with light and dark brown on upper surface. 



Tijpe and paratypes.— The type (U.S.N.M. No. 109820) 6.9 cm. 

 long was collected September 2, 1933, in a waterfall stream on Kao 

 Chong, near Trang, in Peninsular Thailand. Two paratypes 

 (U.S.N.M. No. 109819) are 6.5 cm. long. 



GLYPTOTHORAX MAJOR (Boulenger) 



Figure 88 



Akysis major Boulenger, 1894a, p. 246 (Sarawak, Borneo). 

 Glyptosternon major Smith, 1929, p. 13 (hill stream, Kao Sabap). 



This species, previously known from rivers of Borneo, was defi- 

 nitely added to the Thailand fauna in 1927, when two specimens, the 

 largest a female 6.5 cm. long with well-developed ova, were collected 

 by Luang Masya Chitrakarn in a waterfall brook near the base of 



/ 



,.,-#' 



-^ 



Figure 



'■''=^»; 



-Glyptothorax viajor (Boulenger). Drawn by Luang Masya; courtesy of 

 the Thailand Government. 



