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

 number of specimens in the cold portion of the Faeroe Channel at 540 — 040 fathoms, bottom-tempera- 

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

 The Norw. North-Atlantic Expedition took 15 specimens, 37 510 mm. long, off the west of Norway, 

 west from Bear Island and west from Spitzbergen; the depths were (2bo) 457 — 1333 fathoms, bottom- 

 temperature ( 1 i| — 07 to — i°6C. 2 ). Again, the Nathorst Expedition of 1898 took 1 specimen oft 

 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 Mayen and Greenland (72 42'X.L. 14 

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

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

 (366 — 430 mm. long) in the cold area off western Norway (63 7' NX. 1 38' EX.), where the depth was 

 650—720 fathoms. 



L. frigidus is so generally 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 have identified a Evcodes 

 occurring generally in the western part of the true Atlantic Ocean, with L. frigidus Coll. from the 

 ice-cold Polar Depths. I believe, indeed, I am in a position to sav 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 verv important question in 

 biological regard, namely, whether a species of fish can be common to the warm ground in the depths 

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



Ly codes atlanticus Jensen. 



1895. Ly codes frigidus Goode ec Beau (nee Collett), Oceanic Ichthyology, p. 305; Mem. of the Museum 



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

 1898. L. frigidus Jordan &. Evermann (nee Collett), Fishes of North America, III, p. 2405. 

 1901. L. atlanticus Jensen, Vidensk. Medd. Naturh. Foren. Kbhvn., p. 207. 



') Giinther (l.c.i has referred this to L. rtticulatus Reinh., but both F.A.Smitt and l,iitken have remarked upon 

 its resemblance to 1.. frigidus Collett. It agrees perfectly in fact with the large male of L.frigidus from the [ngoli Expedition, 

 as appears both from Giinther's description and figure; only, Giinther gives Ins specimen a mediolateral lateral line, which 

 must rest on some error. 



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

 i°iC.| arises from an error in determination; Prof. Collett has kindlj informed me that it was given away to some 

 Museum so that the determination cannot now be controlled; concerning a second specimen from 350 fathoms iV North-Atla 

 Kxped. St. 1241 which Collett has mentioned, I hav< already remarked that the early appearance of the seal) covi 

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



The tngolf-Expedition. 11. 4. 4 



