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 G. 

 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 ventralty. 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, 1 C. anatiros- 

 tris and G. 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 G. 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, TO; 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.) 



1 See Gilbert and Hubbs, Proc. U. S. Nat. Mus., vol. 51, 1916, p. 175. 



