499 Storer on the 
front of the anal fin, forming the outer boundary of 
the abdomen. The two upper rows of tubercles are 
of the color of the back ; the lower, colored like the 
abdomen; the tubercles of all these rows are granu- 
lated upon their sides, and have a naked spine at 
their summit. Head covered with tubercles similar 
to those of the body; those on the lower portion of 
the operculum larger than those on the other parts 
of the head ; diameter of the eye one inch; irides 
red; distance between the eyes, two and a half 
inches. Nostrils, tubular. T'eeth in the jaws sharp, 
and compactly placed; a greater number of rows of 
teeth in the upper, than in the lower jaw. Lips yel- 
low. Just back of the top of the head, a com- 
pressed ridge rises abruptly, and as abruptly stops, 
after passing a short distance back ; its depth being 
in its middle equal to one third of its length ; and 
its length equal to one third the body of the fish ; 
this ridge is formed of distinct rays, which are very 
visible in the dried specimen; the top of this ridge 
is covered with tubercles precisely similar to those 
which compose the middle row on the body ; directly 
back of this dorsal ridge is a small flat surface com- 
posing the space between it and the dorsal fin, whose 
sides are armed with strong tubercles projecting 
laterally. Immediately behind this space, com- 
mences the dorsal fin. 
The Dorsal fin is rather longer than high. 
The longest rays of the Pectorals equal the width © 
4 the base of these fins. 
: The Ventrals, together with the anterior portion of 
rie pectorals, form an oblong disk, of a bright yel- 
