36 



THE FISHES OF THF .INGOLF> EXPEDITIONS. 



Mellville island and near the „Copper mine" (67° 12' Lat. North) in the Gulf of Bothnia and in the adjoining part of 

 the Baltic, in the Swedish and Russian lakes, in the White Sea and at Novaja-Semlia. Cfr. my former communication 

 the on the northern Cottoids in „Vidensk. Meddel. Naturh. Forening" 1876. Further information on its distribution at 

 the east coast of Greenland may probably be awaited through a future Eastgreenland expedition. 



Icelus hamatus Kr. 



Tlie places where this httle arctic Cottoid was obtained at the ,Ingolf> expedition were: 



Station Lat. N. Long. W. fathoms bottom temp. 



31: 66° 35' 55" 54' off Holsteinsborg 88 1.6C. 



33: 67-57' 55° 30' S.W. of Egedesminde 35 gray sand o'.S C. 



34: 67° 17' 54" 17' off Holsteinsborg 55 0-.8 C. 



127: 66" 33' 20° 05' North of Iceland 44 sand bottom 5".6 C. 



Other informations on its distribntion and occurrence will be found in the report of the 

 <'Dijmphna> expedition and in the Norwegian North-Sea expedition'^, in Oceanic Ichthyology etc. 

 In the last cited work and in Gilbert's report on the fish-collections made in the northern part of 

 the Pacific (at Alaska, Unalaska etc.) it is named Icelus biconiis (Reinhardt), the author probably 

 following the hypothetical suggestion by Collett, that an Icelus may have been the foundation of 

 Reinhardt's Coitus biconiis^ which can not be determined with certainty, the original specimen not 

 existing. To change a denomination of scientific certitude with another of dubious applicabilit)- can 

 only involve uncertainty and want of clearness. Gilbert also infers the possibility that the Pacific 

 type might differ specifically from the Atlantic North-Sea type. There are further named by North- 

 american ichthvologists quite a series of Northpacific species: Icelus spiniger, caualiculatus. vici nails, 

 eiiryops and scutiger, Icelimis borealls, leiiiiis, filanientosus, fiiiibriatus and octclaliis, as well as some 

 species of new genera itnknown to me. The relation between those representative - species from the 

 same region of both oceans is, it is true, of great interest, but requires for its solution a relatively 

 great material placed in one single hand. 



Artediellus (Centridermichthys) uncinatus (Rhdt.). (Tab. IV, fig. 9.) 



Of this small Cottoid many specimens were capttired at station 33 (67"" 57' L,at. North, 55" 30' 

 Long. West, at a depth of 35 fathom.s, on gray sand, at a temperature at the bottom of o\8 C), some 

 at station 29 (65" 34' Lat. North, 54 ' 31' Long. West, depth 68 fathoms, on sandy bottom, temperature at 

 the bottom o .2 C.) and a single specimen at station 31 (66° 35' Lat. North, 55° 54' Long. West, at 88 

 fathoms, temperature of bottom i°.6C.), all on localities off the west coast of Greenland, not farther 

 sottth than Sukkertoppen , not farther north than Egedesminde. On its occurrence elsewhere may be 

 referred to my former «Meddelelser om nordiske Ulkefiske» («Vidensk. Medd. Naturh. Forening 1876, 

 Novaja Semlia, coast of Norway down to 59 ) and to < Bidrag til Kundskab om Kara Havets Fiske:> 

 («Dijmphna-Togtet:> 1886, y>. 124, west coast of Novaja Semlia); to Collett: ( den norske Nordhavs- 

 Expedition >, Fiskene, p. 29, between North Cajie and Spitsbergen) and his JNIeddelelser om Norges 

 Fiske:> ( Nyt Magasin for Naturvidensk. > Bd. 29, 1884); also Httbrecht ( Niederl. Archiv f. Zoologie, 



