292 FROCEEDIXaS OF THE NATIOXAL MUSEUM. vol. xxvu. 



irropular series of dark streaks or blotches. In males, the lower iaw 

 and preopercle is cross-banded with black and light yellow; the abdo- 

 men, lower half of sides in front of anus, and prepectoral region, with 

 large roundish white spots, separated by vermiculating areas, rendered 

 dusk}' by aggregations of coarse black dots; ventrals dusky and sil- 

 very, the latter frequently forming cross bands; spinous dorsal dusky 

 or black, with irregular series of white spots not confined to basal 

 parts of tin. In both sexes the pectorals, second dorsal, and caudal 

 are translucent or yellowish, crossed by narrow Ijlack Imrs. The 

 females are more numerous than the males in our collection, ])ut the 

 disparity in number is not so great as has been found by other writers. 

 In 4:5 specimens examined as to this, 17 are males, 28 females, .\mong 

 specimens obtained at Petropaulski and at the U. S. Fish Connnission 

 steamer Alhatro-ss station 3040, oft' Robben Island, in IS fathoms, no 

 males are included. (Gilbert.) 



Coasts of Alaska; taken abundantly in Bristol Ba^' in li to 26 

 fathoms, and about Robben Island and the coast of Kamchatka. 



{plsf/'Ila, pistil; (/cro^ I bear; in allusion to the axillary papilhv of 

 the male.) 



35. GYMNOCANTHUS INTERMEDIUS (Schlegel). 



Cottus intermetJiuii i^CTih^G'Eh, Fauna Japonica, Poiss., 184.S, p. 38; coast of Jezo. — 



GtJNTHER, Cat. Fish, II, 1860, p. 167; copied. 

 Gymnocanthus intermedius Gilbert, Rept. U. S. Fisli C'omm. for 1893, 1896, }>. 424. 

 Cotius filamentosus Sauvage, Rev. Mag. Zool., Ill, 1875, p. 279; Hawaiian 



Islands (V)y error). 



Head 2i in length without caudal; depth 4^. Dorsal IX or X-14 

 or 15; anal 15; lateral line 37. E^^e 4 in head; interorbital space 

 (bone) 11; snout 4; maxillary' 2|. 



Upper profile of head straight and gently sloping from dorsal to 

 eye, thence rounded to front of eye and slanting straight and steep at 

 snout. Interorbital concave, shallow, without ridges or channels. 

 Top of head concave between a pair of slight rounded ridges that run 

 back from each eye. Suborbital stay rather prominent. Lower jaw 

 included; maxillary reaching to below middle of eye, or varying from 

 that point to below posterior margin of pupil. Very small conical 

 sharp teeth on jaws; the bands wider in front; no teeth on vomer or 

 palatines. 



Angle of preopercle with a long sharp spine, which reaches just 

 past edge of opercle; above it bears 3 or 4 sharp antler-like processes. 

 Edge of preopercle below with 3 moderate, sharp spines of about 

 equal size; the upper one directed downward and backward, the other 

 two directed downward and forward. Nasal spines well developed. 

 Over posterior margin of eye is a blunt tubercle which bears a rather 

 large simple tentacle. Top of head without l)ony tubercles as in G. 

 pistilliger. A prominent sharp humeral spine just above base of 

 pectoral. 



