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PROCEEDINGS OF THE NATIONAL MUSEUM. 



dorsal line and the median line extended to base of caudal; upper 

 ventral line originating- below and in front of the pectoral fin, passing 

 innnediatel}' above base of ventral, to which it does not send a sepa- 

 rate branch, and terminating opposite middle of anal fin; lower ventral 

 line single on breast, forking in advance of middle of ventral tins, the 

 branches passing to base of caudal. In the 3^oung the scales are all 

 ctenoid, except those in mid-ventral region, breast, prepectoral area, 

 and sides of head all becoming smooth in adult; snout, subocular ring, 

 suborbital stay, interopercle, and usually the lowermost portion of 

 su])opercle, scaleless; basal half or more of caudal and basal third of 

 soft dorsal with the membranes densely scaled; pectoral basis also 

 densely scaled; scales on breast not greatly reduced, more than half 

 as large as those on middle of sides; median lateral line with 110 pores; 

 S or 1) scales in an (oblique series between median line and the one 

 above it. Color in most of our specimens a nearly uniform warm 

 brown, lighter on under parts, marked only with irregular small black 



Fig. 3.— Hexagkammos lagocephalus. 



spots and lines, wnich may extend on the dorsal and pectoral fins; anal 

 and ventrals black, the thickened tips of the rays in these and the 

 pectoral fins often white; a large blackish humeral spot in young 

 specimens, often disappearing in adults. One specimen (Iturup Island) 

 has the upper parts, including dorsal and caudal fins, bright reddish, 

 with some dusky blotches and cloudings, the humeral spot conspicuous. 



West shore of Bering Sea; not known from Hokkaido nor from 

 Alaska. We have numerous specimens from Robben Island, one spec- 

 imen each from Bering and Iturup islands. Young specimens up to 

 20 cm. in length have the scales all rough ctenoid as in //. stelleri 2^nA 

 11. OGtogramnmn. Specimens 30 cm. long have most of the scales 

 smooth, a few along middle of sides still ctenoid. In an adult 54 cm. 

 long all the scales are smooth, those on head and nape partially imbed- 

 ded. In shape and general appearance this species very nnich resem- 

 bles //. (Hitograrnmns. It has a deep caudal peduncle, a convexly 

 rounded caudal fin, and a rather bluntly rounded snout. 



{Xayoos., hare; Ke^aX?}, head.) 



