558 Storer on the Fishes of Massachusetts. 
July 11th, 1839. Since this paper has passed 
through the press, I have had an opportunity to ex- 
amine a specimen of the “Carcharias obscurus," 
which I admitted upon page 533, from having re- 
ceived several serrated teeth, which I felt persuaded 
belonged to that species. The description of Le 
Sueur being rather concise, I would add a few 
words, 
The fish just examined was taken yesterday in a 
net at Nahant. Its length is 94 feet; its weight 
800 lbs. All the upper part of the body is of a 
dark brown color, rather lighter than the mackerel 
shark: the neck and abdomen are of a dirty white. 
Gape of the mouth very large. A single row of 
sixteen triangular serrate teeth in the upper jaw; 
those in the middle of the jaw, one inch and two 
lines high, and one inch wide at their base ; those 
towards the angle of the jaw, smaller. 'T'wo rows of 
teeth in the lower jaw, similar in their form and 
number, but smaller than those in the upper jaw. 
The first Dorsal fin is one foot in length. 
The second Dorsal is one inch long. 
The Pectoral fins are two feet high, one foot long; 
and are falciform. 
l'he Ventrals are seven inches long. 
The Anal fin is one inch long. 
The upper lobe of the Caudal fin measures two 
feet over its curvature; the lower lobe measures one 
foot and a half. 
