532 Storer on the 
of this, between it, and the tail, at the origin of 
which is quite a concavity. At the termination of 
this depression, the caudal fin commences, exhibit- 
ing at its origin, a very abrupt prominence. 
The ichthyologist will observe that I have made 
no mention of a triangular process which is found 
upon the inferior portions of the upper lobe of the 
tail, within a few inches of its extremity; the tip 
of the tail of my specimen had been removed, 
probably in some encounter; its upper edge had 
healed over, but a portion of a denuded vertebra 
was left exposed, and the lower edge of the wound 
was not healed. So that the tail was probably 
several inches longer previous to the injury. 
In the ninth volume of the “ Medical Reposi- 
tory,” published in New York in 1805, is a very 
imperfect description, together with a rude figure 
of this species taken near Long Island. Dr. Mitch- 
ell, when he wrote that description, supposed it to 
beanew species. He was afterward satisfied how- 
ever that it was not a new fish, as we may fairly 
infer, by his extracting a portion of this description, 
into his paper upon the “Fishes of New York,” 
and placing it under the head of “Squalus vul- 
pes," without making any reference to his former 
remark “ that it is evidently a different species from 
that figured and noticed by Pennant in his British 
Zoology." ë 
