52 DR. A. GUNTHER ON THE BRITISH CHARRS. [Feb. 11, 
Description of a male specimen, length 103 inches.—Head and body 
compressed, slightly elevated, its greatest depth being below the 
origin of the dorsal fin, where it is contained four times in the total 
length (to the end of the middle caudal rays). The least depth of 
the tail is considerably less than the length of the base of the dorsal 
fin. ‘The height of the head above the mandibulary joint is more 
than the distance between the posterior margin of the orbit and the 
end of the operculum. The upper profile of the head is elevated 
above the margin of the orbit, the diameter of which is one-fifth of 
the length of the head, shorter than the snout, and a little more than 
one-half of the width of the interorbital space. The latter is convex, 
with a prominent ridge along the middle, and with a pair of series 
of pores. Snout slightly compressed, subconical, with the jaws equal 
anteriorly. The nostrils are situated midway between the end of the 
snout and the anterior margin of the eyeball; the posterior is the 
wider and round, the anterior being a very narrow vertical slit ; both 
are separated by a narrow cutaneous bridge. The mawillary extends 
to the vertical from the posterior margin of the eye, and is armed 
with sixteen very small teeth, the posterior ones being quite rudi- 
mentary. All the other teeth small—four in the intermaxillary, twelve 
in each mandible, two to four on the vomer, fifteen on each palatine, 
and four pairs on the tongue. The suboperculum forms the hind- 
most part of the gill-cover, and does not cover the exposed portion 
of the humerus above the root of the pectoral; it is narrow, its ver- 
tical width being one-third of that of the operculum. Only the two or 
three outer branchiostegals are exposed in a lateral view of the fish, 
the others being situated at the lower side of the head. The lower 
branch of the outer branchial arch is provided with nine lanceolate 
straight gill-rakers; the longest is two lines long in the specimen 
described. 
BS iS Rae Pa a 
The origin of the dorsal fin is nearer to the end of the snout than 
to the root of the caudal ; the length of its base is considerably more 
than that of the last ray, and contained once and two-fifths in that 
of the fourth ray. The fourth and fifth rays form an acute point, 
and the upper margin of the fin is nearly straight. The first ray is 
nearly half as long as the second, the second half as long as the 
third, the third not much shorter than the fourth; the fourth and 
fifth are longest, the former simple and the latter branched ; the last 
is split to the base, and nearly half as long as the fifth. The dis- 
tance of the adipous fin from the dorsal is less than twice the length 
of the base of the latter. 
The origin of the anal fin is in the middle between the root of the 
caudal and that of the outer ventral ray; the length of its base is 
less than that of the dorsal, and two-thirds of the length of the fifth 
ray. The fourth, fifth, and sixth rays are the longest, and form an 
acute point ; the lower margin of the fin is slightly emarginate. The 
first ray is short, half as long as the second; the second half as long 
as the third; the third two-thirds as long as the fourth, which s 
