51 



varietet, der synes at være den paa Spitsbergen, eller idet- 

 hele i det rent arctiske Gebet hyppigst optrædendeJForm 

 af Arten, er næsten ensfarvet uden større Pletter eller 

 Striber. Bundfarven, som er graagul. er næsten skjult af 

 yderst line, tætstillede. brune Punkter; bos de yngre ere 

 disse især udbredte over Finnerne og paa Legemets Sider, 

 som derved erholde en brunlig Afskygning. ligesom hist og 

 lier, saaledes som "paa Bugen, Bundfarven kan optræde 

 uplettet. 



Disse Individers Maal og Straaleantal var følgende: 

 Totallængde. Hovedets Længde. D. A. 



a. 45""' 12""" 41 ; • 34. 



b. 49 - 13,5 - .38; 31. 



c. 104 - 24 - . 40; 32. 

 Det 4de Lulivid, der er det største, og noget defect. 



idet Huden tildels er afrevet, ligesom Caudalen mangler, 

 har jeg i min foreløbige .Oversigt' troet at burde henføre 

 under L. tunieatus, Eeinh., væsentlig paa Grund af et 

 større Straaleantal i Analen og Pectoralen, samt den sidst- 

 nævnte Finnes betydelige Længde. idet Spidsen naar lidt 

 forbi Begyudelsen af Analen. Sandsynligvis udgjør det 

 dog blot et stort Individ af L. Jiiienfiis, og gaar blandt de 

 i den ovenfor anførte Afliandling nævnte Varieteter nærmest 

 ind under var. c. suhjuscus. Af denne Varietet har Uni- 

 versitets-Musa=et allerede flere mindre Ext'mplarer ira Var- 

 angerfjorden i Norge. 



Dette sidstnævnte Individ, der var en Hun med et 

 overordentlig stort Antal tine Rogn i Ovarierne. hnvde føl- 

 gende Maal: Totall. 122™"' (omtr.); Hovedets Længde 

 33-". Straaleantallet var: D. 42. A. 38. P. 39—42. 



Bundfarven, der er lyst graagul. er omtrent ligesaa 

 stærkt fremtrædende. som de smaa uregelmæssige Pletter 

 (under en Orltitaldiameters Størrelse), der' er jevnt fordelte 

 over den. Hist og her ere Pletterne lidt samnienhængeude, 

 uden dog at danne Linier; de horizontale Finner ere der- 

 imod stribede paa tvers. Huden er overordentlig løst ved- 

 hængende. skjønt Individet var vel conscrveret. 



Paa.dljællerne af dette Individ snyltede et Exemplar 

 af en stor Lernæide (sandsynligvis HaemobapJtes cijdop- 

 terina, Fabr.). 



Føde. Veutrikelen- af det ene Individ fandtes fyldt 

 med smaa Crustaceer. nemlig en Caprella sepiemtrioiialis, 

 Kr., samt flere Individer af Proiomedeia faseleda, Kr.; den 

 sidste Aniphipode fandtes ligeledes hos et af de unge Indi- 

 vider. I Veutrikelen af det største Individ fandtes Delet 

 af en større Annelide. Pectinaria auricoma, (Miill.). 



Spitzbergen and throughout the Arctic regions generally 

 than any other form of the species, is of an almost uniform 

 colour, exhibiting no vestige of large spots or stripes. The 

 ground-colour, greyish-yellow, nearly concealed by a mul- 

 titude of closely disposed minute brown specks; in com- 

 paratively young individuals these minute spots are dis- 

 persed in particular over the fins and along the lateral 

 region of the body, which they blur with a brownish tinge ; 

 and here and there, too. as on the abdominal surface, 

 the ground-colour occurs uniformly sjiotless. 



Principal dimensions, and number of lin-rays: — 

 Total Length. Length of Head. D. A. 



a. 45 ^ 12'"- 41; • 34. 



b. 49 - 13.5 - 38; 3L 



c. 104 - 24 - 40; 32. 

 The fourth specimen is much the largest, but some- 

 what mutilated, poi-tions of the skin having been torn off; 

 the caudal, too. is wanting; in my preliminary report* 

 I have referred it to L. tunicafus: Reinh.. chiefly 

 by reason of the greater number of tin-rays in the 

 anal and the pectorals, and from the very considerable 

 length of the latter fin, the points of which extend a 

 short distance past the origin of the anal.. Probably, how- 

 ever, this specimen was merely a large-sized individual of 

 L. lineahis. and should in that case rank under var. c, 

 siibfnsms. mentioned in the paper cited above. Of this 

 variety the University Museum is already in possession of 

 several smaller specimens from the Varanger Fjord. 



This, the last of the individuals, a female, having 

 in the ovaries large quantities of minute ova, measured 

 as follows: — Total length 122""' (about); length of 

 head 33'""'; number of fin-rays: '— D. 42; A. 38 ; P. 

 39—42. 



The ground-colour, a uniform light greyish-yellow, 

 and the small irregularly disposed spots (somewhat less in 

 diameter than the length of the orbit) cover about an equal 

 extent of surface. In places, the spots exhibit a tendency 

 to approximate, without however forming lines; the 

 horizontal fins, on' the other hand, are distinctly marked 

 Avith transverse stripes. The skin is remarkably lax, not- 

 withstanding the individual was in all respects a well-pre- 

 served specimen. 



On the gills of this individual occurred a large 

 example of a Lernæan parasite (possibly Hæmohaphes 

 cydopterina, Fabr.). 



Food. — The stomach of this one specimen was 

 found distended with small crustaceans, viz. a Caprella 

 septemtrionalis, Kr., and divers examples of Protomedeia 

 fasciata. .Ki:\ the latter Amphipod was likewise detected in 

 the ventricle of one of the young specimens. The stomach 

 of the largest individual contained fragments of a large 

 Annelid. Pedhmria _ auricoma. (Miill.). 



Forh. Vid. Selsk. Chra. 1S78, No. 14, p. :'.0. 



Fnrli. Via. Selsk. Chra. IsTS, No. 14, p. :!0. 



