THE FISHES OF THE ■ IXGOLF» EXPEDITIONS. ig 



Lumpenus lampetraeformis Walb. 



is the onh- northern L//;///>c;n/s-STpecies brought home in few specimens from a locaUty Southwest of 

 Sukkertoppen, Station 34: 6f 17' Lat. North, 54- 17' Long. West, depth 55 fathoms, temperature at the 

 bottom 0.9 C. The largest specimen had a length of 190™'". On the distribution of the species may 

 be consulted Collett, Lilljeborg, and 'Oceanic Ichthj-ology'^. 



Flounders. 



Drepanopsetta (Hippoglossoides) platessoides (Fabr.). 



Of this Pleuronectoid the Ingolf expedition has returned some specimens from 



Stat. Lat. N. Long. W. Fathoms 



26: 63° 57' 52^41' Davis Strait. 34 Bottom sand and shells, temperature o°.6 C. 



67" 57' 55° 30' Likewise. 35 Bottom gray sand, its temperature o°.8 C. 



65 16' 55° 05' Likewise. 362 Bottom brownish mud with arenaceous foraminiferes, tp. 3°.6 C. 



known with us as «Haa-Isingen , identical with PlcKronccfcs lii/iai/doidcs , not only from Greenland, 

 also from Iceland, Beeren-Island, Spitsbergen, the Faroe Islands and along the Scandinavian and the 

 Northeuropean shores, from the Murmanian coasts and East-Finmark to the Sound, at Kiel and the 

 southern Danish seas and also from the English-French channel; on the American side to Cape Cod. 



33 

 35 



The genus Lycodes. 



It will be well known to the ichth>-ologists, especially to those studying the arctic fauna, that 

 to distinguish between the species of this genus is connected with special difficulties, because the 

 colouring varies much in the same species, especially after the age, but also individually, likewise the 

 extension of the squamation, and it is therefore extremely difficult to fix the limit between the. 

 species by means of characters that ma}- be confided on. As our museum possesses now more or 

 fewer specimens of 15 Ljcodes-s-pecies from the Polar sea, the northern part of the Atlantic') and the 

 Californian part of the Pacific one should hope, that the difficulties might be overcome. But never- 

 theless my report specially for this department must be given with a certain restraint. The scientific 

 literature amply testifies, that it is a more easy matter to make mistakes in this department than to 

 avoid them. A greater lucidity will not be obtained until the collected material has attained a com- 

 pleteness that at present is only obtained for a few species among the many. 



I) As this geuus was not found formerly in any of the Danish seas, it should be remarked that a fish of this genus, 

 155mm long, was taken in 1S93 in Lseso Rende, afterwards several in the Skager-Rack (jfr. S. 21) viz a Lycodes gracilis M. Sars. 



