Fishes of Massachusetts. 433 
operculum, and passes on in a straight course to a 
line within half an inch of the dorsal fin, where it 
can be scarcely discovered. 
The Dorsal fin is brownish; its length equal to 
half its height. The adipose fin is two inches back 
of the dorsal, slightly curved, two lines in length. 
The Pestorals are six lines long, commencing on 
a line with the beginning of the lateral line. 
The Ventrals commence two and a half inches 
back of the base of the pectorals. * 
The Anal fin is two inches back of the ventrals; 
height of the longest rays equal to rather more than 
half the length of the fin. 
The Pectoral, Ventral and Anal fins silvery, like 
the abdomen. 
The Caudal fin is six lines back of the ws ens fin, 
somewhat forked. 
The fin rays are: B.8; D. 11; P.14; v9.8 
15; C. 19. "——— 
In the first volume of the * Journal of the Acad- 
emy of Natural Sciences," Le Sueur described this 
as a new species, under the name of “viridescens.” 
Cuvier does not acknowledge his to be distinct from 
the European fish, and therefore ‘“ Arted?s" name 
has the priority. 
ScorELvus. Cuv. 
Generic characters. Body long, slender; the 
principal dorsal fin over the interval between the 
ventral and anal fins ; a second dorsal fin, so small 
as to be scarcely perceptible ; the head short; the 
VOL. IIL.—NO. I—IV, 37 
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