MUSEUM OF COMPARATIVE ZOOLOGY. 157 
Citharichthys dinoceros, n. sp. 
The type is a specimen 92 mm. long to base of caudal, obtained by the 
steamer “Blake” at Station xxt., off Guadaloupe, 175 fathoms. 
The greatest height of the body (40 mm.) is contained 2.3 times in the total 
length, and equals about four times the least height of the tail. 
Scales thin, deciduous, cycloid, large, 48 in the lateral line, which is slightly 
curved over the pectoral; 14 above and 16 below the lateral line. 
The length of the head (27 mm.) is contained 34 times in the total length, 
and equals about 34 times the diameter of the eye (8 mm.). The interorbital 
space is very narrow, its width less than 4 diameter of eye ; ridge rather 
prominent, narrow, sharp. 
The upper eye distant from profile by a space (2 mm.) about 7 of the orbital 
diameter. 
The length of the maxillary (12 mm.) is less than half the length of the head ; 
that of the mandible (16 mm.) morethan half, and twice the diameter of the eye. 
The teeth uniserial in both jaws, those in the front much the largest. A 
strong spine upon the snout overhanging the upper lip (much lower than in 
C. unicornis). Above this there is a second, shorter spine. 
The dorsal fin begins upon the snout in advance of eye upon blind side. It 
is composed of 91 rays, the longest somewhat behind the middle of the fin 
(its height 13 mm.), about equal to half the length of the head. 
The anal fin originates about under the origin of the pectoral ; its distance 
from the snout (30 mm.) equals 4 of the total length. It is composed of 73 
rays, and is as high as the dorsal. 
Caudal subsessile, pointed, its length (17 mm.) contained about 5} times in 
total length, and equalling twice the diameter of the orbit. 
The pectorals originate immediately behind the branchial opening, far below 
the lateral line. The third and fourth rays of the fin upon the eyed side elon- 
gated. Its length (88 mm.) is contained 23 times in total length. ‘This fin has 
10 rays ; that of the blind side contains 6 rays; its length (12 mm.) is less 
than 4 that of its mate, and is less than half the length of the head. 
The ventral on the eyed side originates upon the ventral ridge at a distance 
from the snout (27 mm.) equal to the length of the head; it contains 5 rays, 
the length of the first (64 mm.) contained four times in length of the head. 
The ventral of the blind side has 6 rays ; its length is contained 22 times in 
length of the head. 
Radial formula: D. 91; A. 73; P.10/6; V. 5.  L. lat. 48, 14/16. 
Color, grayish brown above, white below. 
xxi Off Martinique. xix. Off Barbadoes. 
xxvi. Off St. Lucie. RXEX, s “e 
xxvilIl. Off Barbadoes. 
