454 



Memoirs of the Indian Museum. 



[Vol. V, 



2i specimens 



. Barkul 



. . 9- 



-i3-xi-i2 . . 



12 



. Barkul Point 





2-iii-i4 . . 



2 



. Balugaon 



. . 



6-1Ü-14 . . 



37 



. Chiriya Island 





13-Ü-14 .. 



35 



. Maludaikuda 





24-X1-14 . . 



i specimen 



. Manikpatna (Long 



Island) 



7-IX-14 .. 



27 specimens 



. Nalbano 





25-X1-14 . . 



2 



. Nalbano Channel 



. . 



n-ix-14 . . 



9 » - 



. Rambha Bay (Breakfast Island) 



xi-14 . . 



15 



. Satpara 





ix-13 . . 



13 



Do. . . 





x-13 . . 



measuring from 10 mm. to 20 mm. 



II 



, to 22 ,, 



14 



,, and 17 ., 



6 



>, to 17 „ 



8 



, to 22 ,, 



17 



> 



15 



to 26 mm. 



17 



, and 19 ,, 



12 , 



, to 24 ,, 



15 



, to 25 „ 



12 



, to 24 ,, 



As Blyth observed, this species is less of a surface-fish than Panchax panchax 

 (Ham. Buch.). The following peculiarities should be noted. The opening of the 

 mouth is very small, horizontal and transverse, and is not broader than the end 



17- 



Fig. 17. — Panchax panchax (Ham. Buch.). 

 Anterior part of the head seen from above, showing the form of the snout with premaxillary. 



Fig. 18. — Aplocheilus melasligma, M'Clell. 

 Anterior part of the head showing the small and somewhat superior opeuing of mouth. 



of the upper jaw. Its contour is like a much flattened ellipse; the lower jaw, 

 however, is slightly longer and broader and this makes the mouth appear to be some- 

 what superior and round (text-figs. 17 and 18.) The mouth is not protractile. The 

 teeth are simple and pointed and are in two rows in the jaws, but those in the pos- 

 terior row are very minute and often difficult to detect. There are no vomerine teeth. 

 The eyes are lateral and their superior borders ' bulge out slightly on the surface of 

 the head. There are three to four scales between the upper border of the pectoral fin 

 and the mid-dorsal line ; there are nearly seven scales between the inferior border of 

 the root of the pectoral and the mid-ventral line (text-fig. 16) ; the number of scales 

 in front of the dorsal fin is twenty eight only ; there are three scales between the post- 

 orbital line and the root of the pectoral fin. The base of the pectoral fin is very 

 muscular and swollen. The caudal fin is truncated and square-cut. In some speci- 

 mens there are two black lines about the middle of the anal fin running parallel to its 

 edge, besides the black lines running along the middle of the fish and along the bor- 

 der of the anal fin. In some specimens there are numerous black spots over the 



