FRESH-WATER FISHES OF SIAM, OR THAILAND 397 



4&. Body without large blackish or dark browa blotches ; caudal fia equal 

 to, longer than, or shorter than head. 

 5a. Depth of body less than 4 times in standard length ; origin of dorsal 

 fin midway between tip of snout and midbase of adipose fin; 

 caudal fin longer than head; color above reddish brown; a few 

 small round black spots on side, most numerous on caudal 

 peduncle; lateral line whitish; abdomen and underside of head 

 pale yellow; dorsal fin black, with a narrow white edge and a 

 median white bar extending forward and upward from posterior 

 border of fin; caudal fin reddish brown spotted with black, its 

 upper and lower edges with white areas, lobes tipped with white, 

 central part white; anal fin white, with blackish base and an 

 isolated brown spot on median part of anterior rays ; ventral fins 

 white; pectoral fins white, obscurely mottled with brown on 



\ipper surface callopterus 



56. Depth of body 4.25 to 4.65 in standard length. 



6a. Color above varying from gray or reddish brown to dark purple, 

 marbled with yellow or brown, and more or less thickly covered 

 with small black spots irregularly arranged; belly and under- 

 side of head yellowish; dorsal, adipose, and pectoral fins dark 

 brown with white border; ventral and anal fins white, with 

 one or two black bars, or dark color may involve most of fins ; 

 caudal fin mostly dark brown or black, tips of lobes white; 

 depth of body 4.25 to 4.65 in length ; length of caudal peduncle 

 1.3 to 2 times its least depth; origin of dorsal fin midway be- 

 tween tip of snout and adipose fin major 



66. Color above dark brownish, with numerous small black spots 

 irregularly scattered over body and head; belly and underside 

 of head yellowish white ; fins darkish, without distinct pattern ; 

 depth of body 4.3 times in standard length; length of caudal 

 peduncle 2 times its least depth ; origin of dorsal fin midway be- 

 tween tip of snout and posterior base of adipose fin — prashadi 

 6c. Color above uniform dark brown; belly and under side of head 

 whitish ; lateral line white ; a wing-shaped yellow spot on back at 

 front of dorsal fin ; all fins dark brown at base, white distally, 

 pectorals with a median dark cross band ; depth of body 4.25 

 times in standard length ; length of caudal peduele 1.4 times its 

 least depth; oiigin of dorsal fin midway between tip of snout 



and adipose fin buchanani 



16. Origin of ventral fins posterior to a line drawn vertically from base of last 

 dorsal ray fuscus 



GLYPTOTHORAX PLATYPOGONOIDES (Bleeker) 



Phnelodus platypogonoides Bleeker, 1855 (136), p. 272 (Lahat, Sumatra). 

 Glyptothorax dorsalis Vinciguerka, 1889-90, p. 246, pi. 7, figs. 4, 4a (Metan, 



Burma). — Smith, 1934b, p. 298 (Meyuam). 

 Glyptothorax siamensis Hora. 1923b, p. 168, pi. 12, fi^s. 1-3 (Nakon Sritamarat). 

 Oymnothorax dorsalis Smith, 1933a, p. 75 (Peninsular Siam). 

 Glyptothorax platypogonoides Fowler, 1934a, p. 89 (Chiengmai). 



The type and, until 1929, the only known specimen of Dr. Vinci- 

 guerra's Glyptothorax dorsalis came from Metan, in Tenasserim, 

 Burma, not far from the border of Western Thailand. From the time 



