F'ishes of. Massachusetts. 523 
My sense of personal obligation to him may, in 
some slight measure be conceived of from the nu- 
merous references made to his kind attentions 
throughout the pages of this Report. 
The description from the “ Society’s Journal,” I 
extract as follows: 
* Body triangular; all the upper portion, of a 
light lurid appearance, covered with hexagonal plates, 
each containing six raised lines; two subcaudal 
spines, short and somewhat incurved; back of the 
dorsal fin, a large isolated plate three quarters of an 
inch in length, composed of portions of the several 
plates, separated from the rest of the horny cuticle 
by a continuation of the ligamentary substance in 
which is imbedded the fin. Form of the body, very 
similar to the ** bicaudalis ;" the entire surface, as far 
back as the dorsal and veniral fins, is covered with 
hexagonal divisions or plates; these are very large 
back of the eyes and ventral fins, and include an im- 
mense number of small granulations, which are sub- 
divided by six elevated lines of similar tubercles; in 
front of the eyes and pectoral fins, these plates are 
smaller and less distinct; the body beneath, white 
and covered with similar scales; from the angle of 
the eye to the ligamentary iibétancé at the base of 
the tail, are included ten plates in a direct line; from 
the highest point of the back to the belly, nine sim- 
ilar rows of plates; behind the dorsal fin is a surface 
of lizamentary substance, three inches in length, of 
à darker color than the rest of the surface, extending 
to the caudal fin, and containing, just back of the - 
dorsal fin, one isolated plate. Subcaudal spines 
