TW. = S4 
Fishes of Massachusetts. 
m n 
A. monopterygius. Cav. The Bulthea A 
Cuv. et Valenc. Hist. Nat. des Poiss. t. iv, p. 224. 
Fauna Boreali Americana D i. 
Early in May, 1838, I recen tes specimens 
of this fish front: Ms: Janata Pohdin, Je, of Nas 
hant, who took them from dietis of À k. 
he had just captured within two miles of salas 
They were each more or less mutilated; one of. m 
them, however, is sufficiently perfect to allow me > 
to present the following description, and to cate 
my friend, Dr. Wyman, to figure it. 
Length of specimen, four inches. Color — 
a light brown, with six transverse dark bands, ex- 
tending from head to tail, those near the head 
broader: beneath, lighter. dy elongated, gradu- 
ally tapering to tail, divide longitudinally by eight 
tows of scaly plates. Those just back of head much 
the largest. Upon top of head, two rows of these 
Seales: two rows on sides: two beneath, in front 
of dorsal, and but six rows back of that fin. The 
body is four-sided in front of the dorsal fin. "The 
angles of the large scales on the back, form promi- 
nent ridges, and between them is thus formed a. 
groove, which extends to posterior extremity of dor- 
sal fin: back of that fin is a dorsal ridge, instead of 
á furrow, which passes to the tail. The same distri- 
bution of these sealy rows exists beneath fish as 
upon wpper part of body. Length of head equal to 
one fifth length of body: width of head greater than 
