- 45 



pl.' 5). Yugelen er yilei-ligore beskreven (etter norske In- 

 divider) af Fort', i 1874 i „Norges Fiske-' p. 40, ligesom 

 Dr. Liitkeu efter Materiale i Kjøbeuhavns Musæum har 

 givet værdifulde Bidrag til Kuudskaben cm denne og de 

 nærstaaeude Arters Syhonymi og Variabilitet i Vid. Medd. 

 fra Naturb. Foren. Kbhvn 1876, p. 382. 



Bemærkninger til Beskrivelsen. Straaleantallet i 

 de verticale Finner var hos Nordhavs-Expeditioueus Indi- . 

 vider en ikke ubetydelig Variation underkastet, idet dette 

 vexlede i Iste Dorsal mellem 5 og 7, i 2den Dorsal og i 

 Analen mellem 6 og 8. 



a. 

 b. 

 c. 



d. 



e. 

 f. 



g. 

 h. 



Total- 



længde. 



[ 40 """ 



141 - 



147 - 

 152 - 



152 - 

 156 - 

 168 - 

 174 - 

 178 - 



Hovedets 

 Længde. 

 27,5""" 

 27 - 



30 - 

 29.:. - 



29 - 

 29 - 



31 - 

 33 - 

 33 - 



ID. 2D. 



£>; 

 6; 

 5; 

 ti; 

 13; 

 6; 

 6; 

 5; 

 7; 



/ ; 



■?; 



6; 



o; 



8; 



7 ; 



7; 



6;- 



7; 



i ; 



7 ; 

 7; 



"<: 

 8; 



7 ; 

 7 ; 

 7 ; 

 6; 



P. 



15—15. 

 14—14. 

 15—15. 

 14—14. 

 14—15. 

 15—15. 

 14—14. 

 14—14. 

 15—15. 



Hos grønlandske Individer bar Dr. Liitken, itblge 

 den ovenfor citerede Atliaudliug, fundet Straaleantallet at 

 være: 1 D. 6 (5); 2 D. 6—7; A. 7 (5—8); P. 16 

 (15). Hos 3 Yngel-Individer fra Varangertj orden fandt 

 jeg: 1 D. 5—6; 2 D. 7 ; A. 7 — 8. Maaske have de 

 grønlandske Individer regulært 1 Straale flere i Pectora- 

 lerne, end de, der bebo de spitsbergenske Farvande. 



Antallet af Legemets Benskjolde varierede hos de 9 

 Individer inden følgende Grændser: Langs Ryglinieu fra 

 Nakken til Halen var oftest 44, undertiden 41 — 43 Skjolde; 

 langs Buglinien oftest 39 — 40, undertiden 38 eller 41 

 Skjolde. 



Fra Nakken til Iste Dorsal fandtes i Regelen 5 Par 

 Skjolde, fra Nakken til 2deu Dorsal 17 Par. (2 Expl. 

 havde 6 Par indtil Iste Dorsal, saaledes ialt 18 Par, og 

 et Individ havde paa den ene Side 5, paa den anden Side 

 6 Skjolde, saaledes indtil 2den Dorsal 17 — 18). 



Gruppen foran Ventralerne talte 22 — 25 Skjolde, 

 hvoraf enkelte vare ganske smaa. 



Mellem begge Dorsaler vare 4 Par Skjolde. (Hos 1 

 Individ var der blot 3 Par. hos et andet 3^/^ Par, bos et 

 tredie 5 Par). 



Mellem Ventralerne og Analen var somoftest Antallet 

 12 Par. (Hos 1 tindes 13 Par. hos et andet blot 10 

 Par). 



Sidelinien er ganske tydelig efter hele sin Længde. 

 Porernes Antal varierede hos de 9 Individer mellem 23 

 og 25; i Begyndelsen staa de forholsvis tæt. omtrent ved 

 hvert Skjold, men bagenfor Spidsen af Pectoralerue ere Af- 

 standene længere. 



Lap. etc. 1838—40, pl. 5). The fry of this tish (from the 

 Norwegian coast) have been further treated of by the present 

 antbor in 1874 (vide -'Norges Fiske," p. 40); and Dr. Liitken 

 has furnished valuable contributions to our knowledge of 

 the synonomy and relative variability of this and other 

 nearly related species in Vid. Medd. fra Naturh. Foren. 

 Kbhvn. 1876. p. 382. 



Descriptive Observations. — The number of rays 

 in the vertical tins varied considerably in the specimens 

 obtained on the North Atlantic Expedition, ranging in 

 1st dorsal from 5 to 7, in 2nd dorsal from 5 to 8, and 

 in the anal from 6 to 8. 



a, 

 b. 

 c, 

 d. 

 e. 

 f. 



fr 

 'n' 



h. 

 i. 



Total 

 Length. 

 140""" 

 141 - 

 147 - 

 152 - 

 152 - 

 156 - 

 168 - 

 174 - 

 178 - 



Length 



of Head. 



27.5™™ 



27 - 



30 - 

 29.5 - 



29 - 

 29 - 



31 - 

 33 - 

 33 - 



ID. 2D. A. 



6; 

 5; 

 •3; 

 6; 



6; 

 6; 



5; 



7; 



/ ; 



7; 



•3; 

 o; 

 8x^ 



7; 

 7; 



tj; 



7 ; 



7; 

 7; 



7; 

 7; 

 8; 



7; 

 7; 

 7; 

 6; 



P. 



15—15. 

 14-14. 

 15—15. 

 14—14. 

 14—15. 

 15—15. 

 14—14. 

 14—14. 

 15—15. 



In examples from the coast of Greenland the num- 

 ber of tin-rays, according to Dr. Liitken, was as follows : 

 — 1 D. 6 (5); 2 D. 6—7; A. 7 (5—8); P. 16 (15). In 

 three fry-sjiecimens, from the Varanger Fjord, I found the 

 fin-ray formula to be : 1 D. 5 — 6 ; 2 D. 7 ; A. 7 — 8 ; 

 perhaps the additional ray in the pectorals is a peculiarity 

 of structure in which the examples from Greenland differ 

 from individuals inhabiting the shores of Spitzbergen. 



The number ot osseous shields on the body was found 

 to vary, in the 9 individuals examined, within the follow- 

 ing limits: along the dorsal line, from nape to origin of 

 tail, most frequently 44, sometimes 41 — 43; along the line 

 of the abdomen most frequently 39 — 40, sometimes 38 — 41. 



From nape to 1st dorsal, in most of the specimens. 5 

 pairs of shields; from nape to 2nd dorsal 17 pairs (2 

 examples were furnished with 6 pairs from nape to 1st 

 dorsal, or, in all, with 18 pairs, and one individual had 5 

 shields on one side and 6 on the other, or, in aU, 17 — 18). 



The group situated in front of the ventrals comprised 

 22 — 25 shields, some of which were very small. 



Between the two dorsals occur 4 pairs of shields (in 

 one individual only 3 pairs, in another 3 pairs and a half, 

 in a third 5 pairs). 



Between the ventrals and the anal the number of 

 pairs is commonly 12 (one individual had 13, another only 

 10 pairs). 



Lateral line distinctly obvious in its entire length. 

 The number of pores varied in the 9 individuals from 23 

 to 25; the first in the series were arranged comparatively 

 close, one at every shield ahnost, but, posterior to the 

 extremities of the pectorals the interspace is greater. 



