86 



ikke rei vedligelioldte, saaledes at flere Characterer under 

 dén flj-gtige Grjenuemgaaelse ikke lode sig med Sikkerhed 

 erkjeude. 



Dr. Liitkeu har imidlertid senere under Kevisionen 

 af de Individer af denne Slægt, der opbevares i Kjøben- 

 liavner-Musæet, bleven opmærksom paa visse, af Reinbai"dt 

 overseede eller lidet paaagtede Ejeudommeligheder hos L. 

 rahJii. og det er i Overensstemmelse med disse sidst vundne 

 Resultater, som han har nedlagt i sit sidste. ovenfor nævnte 

 Ai'tikel om denne Slægts gi-onlandske og islandske Arter ^. 

 at jeg har troet det rettest at holde Nordhavs-Expeditio- 

 nens Individer ud fra den typiske L. vaMii, væsentlig paa 

 Gi'und af Forskjel i Sideliniens Bygning, i Hovedets og 

 Kjævernes relative Længde. i Tandbygningen. foruden i 

 Farven. 



Medens L. vahiri typisk besidder 1 Sidelinie. der er 

 ventral, har Nordhavs-Expeditionens Individer 2, nemlig 

 tillige en medio-lateral; dog maa hertil bemærkes, at et 

 af Typ-Exemplarerne af L. vahUi tillige viser Spor af en 

 medio lateral Sidelinie. 



Medens Hovedets Længde hos L. vahlii indeholdes hos 

 yngre Hun-Individer 5,4 Gange i Totallæugden. og saaledes 

 er forholdsvis lidet, hos gamle Hanner derimod 4.:i. er For- 

 holdet hos Nordhavs-Expeditionens Individer hos intet Kjon 

 over 4.0. selv hos smaa Unger. Fremdeles er Tandrækken 

 2)aa Palatinbeneue hos L. vaTdii i Regelen længere. end 

 Rækken i Mellemkjæven (ialfald ikke. eller kun lidet kor- 

 tere, end denne), medens den hos Nordhavs-Expeditionens 

 Individer altid er kortere, tildels naaende blot den sidstes 

 halve Længde. Endelig er Farven hos begge ulige. hvor- 

 ved dog maa ei'indres. at Typ-Exem]3larerne af L. ralilii 

 ikke ere fuldt ud skikkede til at oplyse dette Forhold, dels 

 iordi de ere gamle (fi-a 40-aarene), dels fordi de i Regelen 

 have været udtagne af Ventriklerne paa Hajer; enkelte 

 ere dog forholdsvis vel vedligeholdte. Medens nemlig L. 

 raMii er forsynet med støn-e mørke Tverfelter ned ad Le- 

 gemet og de verticale Finner, mellem hvilke Felter tindes 

 omtrent lige saa brede Partier af en lysere Bundfarve (der 

 hos gamle Individer synes ganske at forsvinde, saaledes. at 

 Legemet her 1)liver næsten. ensfarvet brunsort). have Expe- 

 ditionens Individer paa lirunsort Bundfarve et Antal skarpt 

 begrændsede hvidgule Tverbaaud. der ere forholdsvis smale, 

 og paa Dorsalen er-e næsten hvide, ligesom der hos alle 

 de undersøgte Individer tindes en hvid Plet ovenfor hver 

 Gjællespalte. 



Med Hensyn til Benævnelsen L. esmarkii, og de nye 

 Individers Identification med denne Art. etterat jeg tidli- 

 gere havde opført dem under Navnet L. raMii. kan føl- 

 gende bringes i Erindi-ing. 



Da jeg i 1874 udarbejdede min Af handling om ,. Nor- 

 ges Fiske-' (Tniægsh. til Forh. Yid. Selsk. Chra.). forelaa 

 til Bestemmelse i Universitets-Musæet o store Individer af 



' Vid. Medd. Xat. Foren. Kbhra. ISSO, p. 307. 



jn-eservation. too. is anything but good, so that several of 

 the characters could not l)e accurately determined from a 

 cursory examination. 



But Dr. Liitken. when re-examining the specimens 

 of this genus preserved in the Copenhagen Museum, had 

 his attention drawn to divers characteristics distinguishing 

 L. valilii. which Reinhardt must have either overlooked or 

 thought undeserving cif notice ; and in conformity with these 

 results, which he has embodied in his latest Memoir, on 

 the Greenland and Iceland sjDecies of this genus.^ I have 

 seen fit to regard the individuals taken on the North At- 

 lantic Expedition as distinct fi-om the tj^pical L. valilii, 

 chiefly by reason of differences in the character of the 

 lateral line, in the relative length of the head and jaws. 

 in the structure of the teeth, and in the colour. 



L. rahlii is typically distinguished by one lateral 

 line, which is ventral, 'whereas the specimens from the Ex- 

 pedition have two, a ventral and a medio-lateral; it must 

 however be admitted, thaf one of the typical specimens of 

 L. vahlii exhibits traces of a medio-lateral line. 



The, length of the head in i. i-fl/;?»' is in young female 

 individuals 5.4 of the total length, and therefore compara- 

 tively short, in old males 4.3; whereas in the specimens 

 from the North Atlantic Expedition, the proportion does 

 not exceed in either sex 4.6. even in very young individ- 

 uals; moreover, the row of teeth on the palatine bones in 

 L. vahlii is as a rule longer than that on the inter-maxil- 

 lary, and. when shorter. Ijut very little, whereas it is invariably 

 shorter in the specimens obtained on the North iVtlantic 

 Expedition, sometimes reaching not more than half the 

 length of the latter. Finally, they differ in colour ; it must, 

 however, be borne in mind, tliat the typical specimens of 

 L. valilii are not in a condition fully calculated to elucid- 

 •ate this question, partly ft-om. their age (ujiwards of 40 

 years in the Museum), and partly from their' having in the 

 majority of cases been taken from the ventricles of sharks ; 

 one or two are. however, comparatively well preserved. L. 

 vahlii is distinguished by large, dark transverse quarterings 

 down the body and the vertical tins, with rather broad 

 patches between, of a lightigh ground-colour, which in old 

 individuals would appear to become obsolete, the body here 

 being almost uniformly bro'nliish-black ; the specimens of 

 the Expedition have the brownish -black ground-colour 

 marked .with a number of sharply defined whitish -yellow 

 (on the dorsal almost wliite) transverse bands; a white 

 spot occurs too above each of the gill-openings. 



As regard the name L. esmarkii, and the identifica- 

 tion of the new individuals with that species (I had pre- 

 viously referred them to L. vahlii). the following remarks 

 should be borne in mind. 



In 1874. when I was occupied in writing my treatise 

 on "Norges Fiske" (Tillægsh. til Forh. Vid. Selsk. Chra.). 

 the University Museum had 3 large sj^ecimens of a Lycodes, 



' Vid. Medd. Nat. Foren. Kbhvii. IssO, p. 307 



