506 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 
postorbital ridges, bear scales armed wholly or for the most part by 
a single strong spinous keel; a similar scale forms a detached scute 
at the origin of the lateral line. The scales on the opercles and on 
the upper half of the cheeks are similar to those on the body; the 
median series between the occipital and postorbital ridges is much 
enlarged. The under side of the head is completely naked, with the 
exception of a few scales below the preopercular angle, as described 
also for C. anatirostris, and as now noted by us in paratypes of C. 
productus,; this detail of similarity confirms the other characters 
which indicate the close relationship between the three species. 
The first dorsal fin is high, the second spine being almost as long 
as the postrostral length of head; the first soft rays are a little 
shorter; the base of the first dorsal is contained 1.4 times in the inter- 
dorsal space, 1.8 times in the postorbital length of head; the first 
rays of the second dorsal are shorter than the pupil. The pectoral 
fin is decidedly longer than the postorbital length of head, and is con- 
tained 2.2 times in the head (tips of rays broken off). The outer 
ventral ray is filamentous, being about as long as the pectoral, and 
extending about to the anal fin; the second ventral ray does not reach 
to the anus, and is contained 4.0 times in the head. 
Color brownish in alcohol, becoming lighter ventrally. Fins dusky, 
excepting the filament of the first ventral ray. Mouth dusky within, 
becoming lighter toward the lips. The buccal cavity is lined with 
brownish black except along the whitish margin of the opercular 
and branchiostegal membranes; the parietal peritoneum is brown- 
ish black. : 
C. weberi is closely related to two Japanese species,’ C. anatiros- 
‘ris and C. productus, but is distinguished by the much smaller or- 
bit, and by the longer, broader snout; by the armature of the scales, 
there being more carinae than in C. productus, but fewer than in C. 
anatirostris, and by a few other details. , 
Table of measurements in hundredths of length to anus (127 
mm.).—Length of head, 70; length of orbit, 17; postorbital length 
of head, 22.5; least width of interorbital, 15; least suborbital width, 
9.5; distance from orbit to preopercular margin, 24.5; length of snout, 
31; width of snout, 25.5; length of the upper jaw, 17; length of 
barbel, 5.5; greatest depth of body, 30; greatest width, across bases 
of pectorals, 28; distance from center of anus to base of outer ven- 
tral ray, 23.5; distance between ventral fin and isthmus, 21.5; 
height of second dorsal base, 12.5; interdorsal length, 17.5; length 
of second ventral ray, 17.5. 
(weberi, named for Dr. Max Weber, in recognition of his work 
on the fishes of this and other families in the East Indian region.) 
1See Gilbert and Hubbs, Proc. U. S. Nat. Mus., vol. 51, 1916, p. 175. 
