!»:• 



Hos disse ere de verticals bvidgule Tverbaand i sin Midle 



Opfyldte af (len sorte liundlarve. eller tildels opløste til 



hvidagtige, aflange Ringe; Baandenes Anta] og Beliggenhed 

 ei - den samme, som hos Expeditionens Exemplarer, men 

 undertiden kanne de være indbyrdes forenede nedtil, og 

 danne lier sammenhængende, gnirlandeformige Tegninger. 

 Deres Begrændsning er mindre skarp, end hos de yngre 

 Individer. Hos et af l.ndividerne ere de paa det egentlige 

 Legeme ganske utydelige, men endnu paa Dorsalerne skarpt 

 begrændsede; lios dette er saaledes Legemet uæsten ens- 

 farvet mørkt brunsort. Nakkepletterne kunne være sammen- 

 hængende, og danne et tversover Nakken løbende distinct 

 Baand. 



Føde. I Ventrikelen af det største af Expeditionens 

 Individer, en Hun (fra 4o9 Favnes Dyb), fandt jeg Koret 

 af en Annelide. maaske af en Terébetta, fremdeles adskillige 

 Individer af Themisto libellula, Mandt, samt endelig en Del 

 Grus fra Bunden, hvoriblandt saaes mange smukke Fora- 

 miniferer, især af en af de V(f ///w-lignendo Shegter (Ra- 

 tal hin Y). Hos det noget mindre Han-Individ fra samme 

 Localitet og Dybde fandtes blot Levninger af Themisto 

 libdlvla. 



Hos 2 gamle Hanner fra Finmarken, optagne paa et 

 Par hundrede Favnes Dyb i Varangerfjorden, har jeg flui- 

 det alene knuste Echinodermer. hvoriblandt kunde kjendes 

 Ctenodiseus crispaius, (Retz.), Ophiacantha sphmlosa. Mull. 

 & Tr.. samt Antedon sarsii (Diib. & Kor.). Endskjont 

 disse Individer saaledes vare henviste til denne kalkholdige 

 Føde. vare deres Tænder dog ikke synderlig slidte. 



Udbredelse. L. esmarkii foreligger allerede saavel 

 fra den europæiske. som fra den americanske Side af At- 

 lanterhavet. Af Expeditionens Individer erholdtes de 3 i 

 Trakterne af Spitsbergen i 1878. det ene i faa Miles Af- 

 stand fra denne Øgruppes Nordvestkant. Det 4de. en spæd 

 Unge. optoges fra Bankerne udenfor Helgeland i Norge i 

 1877. Endelig foreligge 5 fuldt udvoxede Individer fra 

 Fjordene i Finmarken, erholdte i Aareiie 1864 — 76; de 4 

 ere fangede paa Dybsagn (Line) i Varangerfjorden i Øst- 

 finmarken, hvor jeg ligeledes har erfaret, at andre (ikke 

 opbe vårede) Individer i de sidste Aar have været erholdte; 

 det sidste erholdtes i Øxfjord søndenfor Hammerfest (Vest- 

 Finmarken). 



Som tidligere bemærket, henhøre ligeledes de under 

 Navn af L. vdhlii foreløbig opførte Individer fra Nord- 

 Americas Østkyst under forhaandenværende Art. Paa den 

 sidstnævnte Localitet erholdtes i Aarene 1878 — 79 4 fuld- 

 voxne Individer udenfor Rysterne af Nova Scotia, hvor dog 

 Havfaunaen endnu er ganske arctisk. Det ene af disse 

 opbevares paa Univ. Mus. i Christiania. 



viduals. ln (hese specimens, the middle portion of the ver- 

 tical whitish-yellow transverse bands is Idled up with the 

 black ground-colour, or broken up into whitish elliptic 

 rings; the number of these bands and their position is the 

 same as in the specimens taken on the Expedition; some- 

 times, however, they are united together and form contin- 

 uous chaplet-shaped markings: they are Less sharply defined 

 than in the younger examples. In one of the individuals 

 they are quite indistinct on the body, but continue to be 

 sharply denned on the dorsals; this specimen, therefore, has 

 the body of an almost uniform brown ish-black. The nuchal 

 patches are sometimes continuous, tonning a transverse 

 band across the nape. 



Food. — In the ventricle of the largest specimen 

 taken on the Expedition, a female (brought up from a. 

 depth of 459 fathoms). I found the house of an Annelid, 

 possibly a Terebdla, several examples of Themisto HJwUala, 

 and a quantity of gravel from the bottom, in which 

 were many fine Foraminifeni', belonging chiefly to one of 

 the Nautilus-like genera (Rotalina?). The stomach of" the 

 male. a. somewhat smaller individual, from the same locality. 

 contained only fragments of Themisto libeJhiln. 



In the ventricles of two old males from Finmark, 

 taken at a depth of a couple of hundred fathoms, in the 

 Varanger Fjord, I found only crushed Echinodermata, 

 amongst which could be determined Ctenodiseus crispaius, 

 (Retz.). ()j)Jiiu<iintha spimdosa, Midl. & Tr., and Antedon 

 sarsii (Did). & Kor. ). Although the individuals in question 

 had subsisted on this calcareous food, their, teeth were but 

 little worn. 



Distribution. — L. esmwrkii has been met with both 

 in the European and the American tracts of the North 

 Atlantic. Three of the specimens of L. esmarkii collected 

 on the Expedition were- taken in the tract adjacent to 

 Spitzbergen, in 1878. one of them but a few miles from 

 the north-western extremity of that group of islands: the 

 fourth, a very young individual, was taken on the banks 

 off Helgeland, in Norway, in 1877. Finally, 5 full-grown 

 srjecimens were obtained from the fjords of Finmark, in 

 the period from 1864 to 1876. 4 of them from the Varan- 

 ger Fjord, in East Finmark, where, as I am given to under- 

 stand, other individuals, not preserved, have been taken of 

 late years, that last obtained having been captured in the 

 Øxfjord. south of Hammerfest (AVest Finmark). 



As already observed, the specimens from the eastern 

 coast of North America, provisionally referred to L. rai/lii, 

 belong likewise to the present species. In that region were 

 obtained in the years 1878 and 1879 four full-grown ex- 

 amples off the coasts of Nova Scotia, where the marine 

 fauna has quite an Arctic character. One of the specimens 

 is ] (reserved in the University Museum, Christiania. 



