FRESH-WATER TISHERIES OF CEYLON. 105 
Fig. 5.—Ventral view of advanced mouth fry to show partial 
enclosure of yolk sac by the larval parietes. Total 
length 50 mm. ; tail-fin deeply forked, lobes rounded. 
When alive there is a prominent white brow-spot 
on the level of the hinder quarter of the eyes in 
dorsal view. 
Fig. 6.—View of palate of adult female 143 inches long. The 
palatine tract on each side measures 25 x 12 mm., 
and the teeth are present in full strength; between 
their anterior ends there is an exceptional pair of 
round vomerine groups. a, angle of gape; a’, angle 
of jaw, acetabulum formed by the quadrate; the 
lower jaw has been removed. 
Fig. 7.—View of palate of adult male 11 inches long: size of 
palatine tract 17 X 8 mm.; no vomerine teeth; 
palatine teeth weak and sparse. 

p 6(22)10 
