258 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvii. 



below it ?> short, strong spines, the lowermost directed downward and 

 forward; outer surface of the upper spine with 3 or 4 low, fincl}^ ser- 

 rated ridges, its inner edge smooth, without accessory cusps or spin- 

 ules; opercular ridge high, serrate; 2 sharp spines on anterior angle 

 of subopercle; top and sides of head rough, with minute spinous 

 points; preopercle and lower jaw with numerous short filaments, a 

 longer one on end of maxillary. Body entirely covered with minute 

 prickles, which invest also the abdominal region; those above lateral 

 line longest and most thickly placed; lateral line with a series of plates 

 similar to those in E. bison^ each surmounted by a sharp spine; lateral 

 line with 2 curves, approaching back most nearly at end of spinous 

 and at end of soft dorsal; many conspicuous white filaments scattered 

 over sides below lateral line. Dorsals entirel}- separate, the free 

 interspace as wide as pupil. E^-e larger than interorbital width 4f in 

 head. Dusky above, with faint, darker crossbars; light below; 2 

 black blotches on cheek; some faint dusky V-shaped prolongations of 

 the coloration of the back down toward base of anal fin; fins indis- 

 tinctly cross-banded; a dark area at base of pectoral, a narrow oblique 

 dusky crossbar on base of caudal fin. Here described from a speci- 

 men taken at Robben Island, 151 mm. long. Known also from Bristol 

 Bay, Alaska, and from Kamchatka. 

 {da/vis, key; gero., I bear.) 



13. CERATOCOTTUS Gill. 



Ceratocottm Gihh, Proe. Ac. Nat. Sci. Phila., 1859, j). 165 {diceraus) . 



This genus is very close to Enopliry)^.^ from which it dift'ers in hav- 

 ing the long preopercular spine armed above with recurved hooks or 

 antler-like processes. Bering Sea. 



iyKkpaz^ horn; Cottux.) 



a. Interorbital width 7 in head, much narrower than distance between parietal 



ridges; eye 1 1 \n superior postorbital part of liead diceraus, 13. 



aa. Interorbital width 4 in head, as wide as distance between parietal ridges; eye Ij 

 in superior postorl)ital part of head namhiei, 14. 



13. CERATOCOTTUS DICERAUS (Pallas). 



Cottns diceraus Pallas, Nov. Act. PetropoL, 1783, p. 354, pi. x, fig. 7; Petro- 



paulski, Kamchatka (Coll. Steller). — Cuvier and Valenciennes, Hist. Nat. 



Poiss., IV, 1829, p. 189.— GtTNTHER, Cat., II, p. 189. 

 Ceratocottn-s diceraus Gill, Proc. Ac. Nat. Sci. Phila., 1859, p. 165; 1861, p. I(i7. — 



Jordan and Gilbert, Rept. U. S. Fur Seal Comm., Ill, 1898, p. 458, pi. lvi; 



Robben I., Petropaulsky, Bering I. — Jordan and Evermann, Fish. N. and 



M. Amer., 1898, p. 1940; Herendeen Bay, Eobben Island. 

 Enophrys diceraus JonDA^ and Gilbert, Sjmopsis, 1883, p. 711. — Gilbert, Rept. 



U. S. Fish Comm., 1893 (1896), p. 426. 

 Synanceia cervus Tilesius, M^m. Ac. Petersb., Ill, 1811, p. 278, pi. xiii; Peti'o- 



paulski. (Coll. Steller.) 

 Cottus stelleri Bloch and Schneider, Syst. Ichth., 1801, p. 63; after Stelle- 



