452 



Memoirs of the Indian Museum. 



[Vol. V, 



8 specimens 



. Off Barkul 



. . g — 13-XI-12 



2 



. Barkul Point 



2-Ü1-I4 



2 ,, 



. Off mouth of Barkul Bay 



i8-ix-i4 



2 ,, 



. Nalbano Island 



25-X1-14 



I » 



. Rambha Bay 



xii-13 



I 



. Rambha 



ii-14 



measuring 18 mm. to 38 mm. 



25 , 



, and 34 



27 , 



, .. 29 



36 , 



, „ 41 



25 , 





24 , 





15) 



The jaws are subequal, the upper one is slightly longer and protractile (text-fig. 

 The mouth is large and its opening horizontal ; the contour of the opening is 



convex in front and extends beyond the breadth of the upper jaw to nearly half the 



Fig. 15. — Panchax panchax (Ham. Buch.). 



Side view of the head and a portion of the trunk, showing the lateral and horizontal opening of the mouth 



and the position of the pectoral fin. 



Fig. 16.— Aplocheilus melastigma, M'Clell. 



Side view of the anterior part of the fish, showing the small and terminal opening of the mouth and the 



position of the pectoral fin 



length of the snout (text-figs. 15 and 17). The teeth in the upper jaw are villiform and 

 are distinctly banded ; in the lower jaw they are in two to three rows and also villiform 

 and banded. In both the jaws there are an outer and a more or less distinct inner 

 series of enlarged teeth. In most specimens the vomerine teeth are present. The 

 margin of both the jaws is coloured dark brown. The white occipital spot is very 

 conspicuous in some specimens, in others it is indistinct and in rare cases wanting. 

 The presence or absence of this spot appears to have no reference to age, locality, 

 or time of the year when the specimen was collected. The black blotch at the root 

 of the dorsal fin, which is well marked in all the specimens, is in some surrounded 

 by a white halo. In some of the larger specimens the margin of the anal fin and in 



