

LYCODINvE. 



in the relation of about 1:2 isometimes 2:3), and thereafter the tail becomes narrower towards 

 the root of tlu- caudal fin. L. flagellicauda on the other hand has a much broader body: the 

 trnnk is round; at the beginning of the anal fin the body is almost as thick as high, and the tail 

 has almost the same thickness relatively in the greatest part of its length, only near the end does it 

 become compressed. Seen from above, L. murcena (fig. 16) with its compressed tail looks therefore 

 rather different by the side of the round-tailed L. flagellicauda (fig. 30). The difference is most appa- 

 rent indeed, if the animals are viewed from the side: in L. muyceiia (fig. 15) the tail displays a 

 gradual decrease in height, whereas in L. flagellicauda (fig. 29) the tail becomes directly 

 remarkably low, as the lower edge immediately behind the anus rises upwards with a rapid slope; 

 by its specially slender, whip-like tail, L. flagellicauda stands on the whole quite isolated amongst the 







Fig. 15 — 16. Lycenchclys mitrana, seen from the side and from above, x I. 

 The scales are omitted. The oval ring over the upper figure shows the form of a cross-section at the place indicated. — The 

 figures are drawn from Collett's type-specimen of Lycodes murccua from the Norwegian North-Atlantic Expedition of 1S77. 



Lycodes known to me. -- The distance between the snout and the anus in L.mura:na is 27,6—30,4% 

 of the total length, in specimens of L. flagellicauda (of similar size) 24,2— 28 %, i. e. on the whole is 

 trreater in L. murcena. 



■7 18 ,Q 



Fig. 17 — 19. Head of Lycenchelys murccua, seen from above, the side and below. X 2 i. 

 Drawn from Collett's type-specimen from the Norwegian North-Atlantic Expedition of 1S77. 



The head has about the same relative length in the two species; in the specimens at hand of 

 L. murama the length of the head namely is 12,9—13,3 % of the total length, in adult specimens of 



