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ICHTHYOLOGY 
the body, tapering and very slender at its end ; no caudal ; 
dorsal small, inserted a little nearer to the end of the tail 
than to its base ; anal at least four times as long as the 
dorsal ; a feeble longitudinal fold on each side of the tail, and 
a still feebler one on its upper part in front of the dorsal ; 
ventrals entire, not marginated nor divided. The body is 
entirely smooth, and there is no spines on any part of the 
fish. 
Entirely of a light brown lilac colour, with a few faint 
white oscillated spots on the disc, and a larger number of 
smaller black ones dispersed in a most irregular way ; pos- 
terior part of the tail annulated, black and orange ; lower 
side of the body entirely of a light cream colour. 
Length of the body six inches., total length fourteen inches. 
The anterior profile is something like the one of Raya 
Asterias, but still more blunt and rounded. The entire ven- 
trals will not allow this sort to remain in the genus Raya, 
and brings it in with the Trygon ; but the absence of a caudal 
spine does not allow it to be placed with this. If these views 
are adopted I propose calling this new genus Neotrygon. It 
would come, in the system, after Sympterygia. 
