The English expeditions of the Knight Errant and Triton (1880 and 1882) canght a large 

 nnniber of specimens in the cold portion of the Faeroe Channel at 540 — 640 fathoms, bottom-tempera- 

 ture 29''2 and 30^^ P.; the largest of these specimens was a male which measured ca. 558 mm. (22 inches)'). 

 The Norvv. North-Atlantic Expedition took 15 specimens, 37 — 510 nnn. long, off the we.st of Norwa>-, 

 west from Bear Island and west from Spitsbergen ; the depths were (260) 457 — 1333 fathoms, bottom- 

 temperature |— II) — 0^7 to — I 6C. '). Again, the Xathorst Expedition of 1898 took i specimen off 

 West Spitzbergen where the depth was 2750 meters and the bottom-temperature — i°4C. Further, the 

 Kolthoff Expedition of 1900 caught 3 specimens between Jan Ma\en and (ireenland (72' 42' N.L. 14° 

 49'W.L.) at 2000 meters. Lastly, the Michael .Sars in 1902 caught 17 specimens (290 — 530 nnn. long) 

 north from the Faeroes (63^ 13' N.L. 6' 32' W.L.), where the depth was 975 fathoms, also 2 specimens 

 (366 — 430mm. long) in the -cold area off western Norwax' (63 7' N.L. 1° 38' E.L.), where the depth was 

 650 — 720 fathoms. 



L. frigidtis is so generalh' distributed over the deeper and deepest parts of the Polar Depths, 

 from Spitzbergen down to Iceland and the Faeroes, that it may be reckoned amongst the most 

 characteristic inhabitants of this deep-sea basin. 



I feel very dubious, therefore, on finding that the American authors ha\-e identified a Lxcodes 

 occurring generalh' in the western pari of the true Atlantic Ocean, witli L. frigidus Coll. from the 

 ice-cold Polar Depths. I believe, indeed, I am in a position to say there must be some error in this 

 determination. Although it is beyond the scope of the present work to enter upon the American 

 forms, I shall yet make an exception in this case since it presents a ver>- important question in 

 biological regard, nameh', whether a species of fish can be common to the warm ground in the de]iths 

 of the Atlantic and to the ice-cold depths of the Northern Ocean. 



Lycodes atlanticus Jensen. 



1895. Lycodes frigidus Goode & Bean (uec CoUett), Oceanic Ichth\()logy, ]>. 305; ^lem. of the Museum 



of Conip. Zool. at Harvard College, vol. XXII. 



1898. L. frigidus Jordan ct E\ernuinn (uec Collett), Fishes of North America, III, p. 2465. 



1901. /..atlanticus Jensen, Vidensk. Medd. Natnrli. Foren. Kbhvn., p. 207. 



'I Giinther (I.e.) has referred this to L.reticulatus Reiiih., but both h'. .\. Suiitt ami I.iitken have remarked upon 

 its resemblance to L. frigidus Collett. It agrees perfectly in fact with the large male of L. frigidus from the Ingolf Expedition, 

 as appears both from Giin ther's description and figure; only, Giin ther gives his specimen a mediolateral lateral line, which 

 must rest on some error. 



2) It is possible that the specimen from the relatively small depth (260 fathoms) witli high bottom-temperature 

 (-r i°i C.I arises from an error in determination; Prof. Collett has kindly informed uie that it was given away to some 

 Museum so that the determination cannot now be controlled; concerning a second specimen from 550 fathoms (X. North-.'^tlantic 

 Exped. Sti24) which Collett has mentioned, I have already remarked that the early appearance of the scaly covering 

 indicates that it is no L. frigidus (cf. p. 23). 



The Ingolf-Exptdition. II. 4, 4 



