Vol. VII, No. 9.] Freshwater Sting-Rays of the Ganges. 629 
[W.S.] 
river falls down to its lowest level. The seasonal variation 
in the numbers caught in this case does not indicate either the 
presence or absence of individuals in any particular locality or 
their migratory habit, but only shows that the mode of cap- 
ture proves more successful at certain seasons. 
In the Ganges we have therefore freshwater represen- 
tatives of at least two species of Batoidei, viz., T'rygon fluviatilis 
(H.B.) and Hypolophus sephen (Forskiil). These species are 
not only found one thousand miles above tidal influence, but 
also breed freely in fresh water. 
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