420 Storer on the 
upon a line with, the posterior angle of the opercu- 
lum ; their length to the height of their longest rays, 
is as 2 to 8. 
The Ventrals, of the color of the abdomen, are 
placed back of the middle of the body ; their length 
to their height is as 1 to 4. 
The Anal fin commences in front of the dorsal, 
and terminates upon the same plane as that fin; 
its longest rays are longer than those of the dorsal. 
The Caudal fin is slightly truncated obliquely, 
the lower portion being the longer. 
The fin rays are: D. 15; P. 12; V. 6; A. 19; 
C. 20. 
I have no doubt of this being Le Sueur's “ trun- 
cata :” he describes his specimen as being a “ deep 
blue on the back ;" it might have been a more recent 
specimen than mine; or the color of the fish before 
me may have been impaired by the salt in which. 
it was sent me. In all important characters it an- 
swers perfectly to the species under which I arrange 
H. , 
Scomperesox. Lacepede. 
Generic characters. The species of this genus 
have the same structure of the jaws as those @ 
Belone ; and are similar also in the form of body 
and Tw :s, with a keel-like edge to the belly ; but the 
posterior portions of the dorsal and anal fins ar e 
divided, forming finlets, as in the mackerel. 
S. equirostrum. Le Sueur. The Bill Fish. 
Journal Academy Nat. Sciences, vol. ii. p. 132. 
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