152 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



ine, intermaxillary, and mandibulary teeth are all of equal size and 

 strength ; (3) the distance between the eyes measured on the bone is 

 always equal to the length of the eye (f of length of eye in Brandti) ; 

 (4) there are no prominent occipital ridges such as are figured in C. 

 Brandti^ but the vertex has numerous slender filaments ; (5) the length 

 of the ventral is ^ that of the head (f in G. Brandti) ; (6) the length of 

 the caudal is nearly twice as great as the distance of the front margin 

 of the eye from the tip of the jaws; (7) the bony plates of the lateral 

 line are so thin and soft that they are inconspicuous under the skin ; 

 (8) the ventrals of G. niger are always either purplish dark-brown with 

 whitish tips, or whitish with several dark bands. There are white 

 blotches on all our examples notwithstanding the great variation in size. 



Cottus verrucosus, u. s. 



27547 (1638). Plover Bay, Siberia, August 13, 1880, T. H. Bean. 



Br. VI; D. XI, 16; A. 15; V. I, 3; P. 17; C. 12 (developed rays). 



Length of the typical specimen 3^ inches (88 millimeters). 



Two sharj) spines above the snout. A short tentacle above the pos- 

 terior part of each orbit and one on each side of the vertex. Vertex and 

 interorbital space deeply concave. Crown, nape, and interorbital region 

 with small skinny warts. Three preopercular spines, the uppermost 

 being as long as the short diameter of the eye. Eye equals snout which 

 is ^ as long as the head to the end of the opercular spine. Lower jaw 

 barely included within the uj^per. The maxilla is longer than the fourth 

 dorsal spine, which is only a little longer than the eye and less than ^ 

 as long as the head. The maxilla equals I of the total length without 

 the caudal, and nearly J the length of the head ; it extends to below the 

 middle of the eye. The mandible extends to the hind margin of the eye; 

 its length equals ^ the distauce from the tip of the snout to the begin- 

 ning of the dorsal. The head is J of the total length with caudal. Teeth 

 in the jaws and on the vooier. The longest dorsal spine equals the 

 longest anal ray and j^ of the total length with caudal. The length of 

 the ventral equals ^ of the total length without the caudal. The vent 

 is slightly in advance of the middle of the length with caudal. The 

 pectoi-al reaches to the origin of the anal. The caudal is ^ as long as the 

 head. The height of the body al the beginning of the dorsal is con- 

 tained 4 J times in the total length without the caudal, and is a little 

 greater than its greatest width. The distance of the first dorsal from 

 the tip of the snout equals about t^ of the total length without the caudal. 

 Skin smooth. Lateral line with numerous short accessory branches 

 extending upward and downward and i)laced exactly opposite each 

 other. 



Colors of the alcoholic specimen : Upper parts very dark brown ; belly 

 and under surface of head whitish ; whitish on the sides along and behind 

 the anal fin ; spinous dorsal colored like the body but with a median 

 and a posterior light band ; soft dorsal with about five dark-brown bands 



