ICHTHYOLOGY. 555 



genus " Urocentri's"') has five spiuous rays above and four below, at the root 

 of the caudal fin ; two spines on the nape, two on the muzzle, two below the 

 nasal openings. 



Spliyrtem afra, Peters (Ber. d. Acad. z. Berlin, 1844, p. 32). The pec- 

 toral fins extend as far as the commencement of the first dorsal ; ventral 

 fins in front of the commencement of the first dorsal. St. Paolo de 

 Loauda. 



Kroyer gives diagnoses for Aspidophorus niger, Kr., decagomis, Bl., and 

 europaeus, and describes anew species from Greenland, A.spinosissinms, charac- 

 terized by jaws of equal length and maxillary barbal cirri. (Tidssk. p. 249.) 



Id. (ib. p. 261) has instituted a new genus, Icelus, in the family of the 

 Sclerogenidse : Eorma subcompressa, altior, quam lata. Caput magnum, 

 aculeis armatum rostri, praeoperculi et uuchae, squamis vero destitutuni. 

 Dentes acerosi, minutissimi maxillarurn, vorneris ossiumque palatinorum. 

 Radii membrane branchiostegae sex. Pinnae dorsales duas discretse; ven- 

 trales sub pectoralibus sitae, quatuor composite radiis ; onmes piunarum 

 radii indivisi. Utriuque a nucha usque ad basin pinnae caudalis series scu- 

 torum osseorum contiuua prope pinnas dorsales. Linea lateralis tuberculis 

 composita osseis. Squamae ciliatee laterum ct abdomiuis rarae et sparsse ; 

 ceterum cutis iiuda. To this genus belong, besides a new species, /. hcema- 

 ius, Kr., from Spitzbergeu, also Coitus undnatus, Reiiih., and Cottus bicornis, 

 Reiuh. 



Id. (ib.) elevates Coitus tricuspis, Reinh., to the rank of a distinct genus, 

 Pltobetor, on account of its wanting the vomeral teeth. 



Id. (ib. p. 267) further institutes a new genus, Caracantlius, in the same 

 family, which, on the other side, approaches the Scorn beroidei, in the height 

 of the body, the shortness of the snout, and the rays before the anal fin : 

 Forma valde compressa, ovalis. Rostrum brevissimum, triuicatuni. Dentes 

 acerosi, ossium iutermaxillarmm, rnaxillaeque iuferioris. Radii membranes 

 branchiostegse sex (?). Os infraorbitale autice aculeo armatum. Duoe 

 pinnae dorsales sat humiles ; pinnae pectorales breves, radiis formate simpli- 

 cibus, pinnae veutrales prorsus rudimentaria: ; duo pinnae aualis aculei, a 

 radiis mollibus sat maguo distinct! iutervallo. Squamse uullae ; pluriniaj vero 

 papillulae ubique cutacea3. Car. ti/picus, from Owhyliee. 



Ayriopus alboguttatus, id. (ib. p, 224), black, with milk white spots ; three 

 pairs of spines on the head. D. 16, 12 ; A. 1, 8. Peru. 



Lastly, the same author has characterized (ib. p. 281) the northern species 

 of the genus Sebastes, S. norvegicus, Cuv., S. mviparus, Kr., and S. imperialis, 

 Cuv. ? 



Sebastes filifer, Valeuc. Cauar. The second spine of the dorsal fin is elon- 

 gated, so that it is ] \ times as long as the third ; only four spines on the 

 praeoperculum. D. 12, 10 ; A. 3, 5. 



