﻿38 



The fishes mentioned in the tables have been bought from the fisher- 

 men and are all of them caught in the deep northern and eastern (Kattegat. 

 with seines as well as with nets, generally on 10 — 21) fathoms of water. 



Pleirr. microcephalous, evidently, does not seek so deep water as Firm-. 

 oynoglossus; but like the latter it does not live in great numbers in the 

 southern < 'attegat or in our smaller seas. The principal fishing-place for it 

 is Frederikshavn. The males seem to be a little smaller than the females. 

 both with respect to the average and the maximum size. 



From the shores of Norway we know little young ones of this fish. On 

 the shores of England its little young ones are rarely caught in spite of all 

 exertions. (See Williamson: 11. Report Scot. Fish. B. pp. 271 — 73). E.W.L. 

 Holt and H. C. Williamson state its spawning-time on the English shores to 

 be May — Septbr. 



The pole Dab ( Pl&wronectes cynoglossus). 



Rather considerable quantities of Piew. eynoglos&us are yearly carried to 

 Frederikshavn, caught in the deepest parts of the northern and eastern 

 Oattegat on soft clay deposits, as for instance north and east of the Skaw, in 

 Licso-Rende, towards the Swedish coast, etc. Farther southwards it is scarce. 



During the present researches it has been tished only a few times; the 

 specimens in the tables have all been bought from the fishermen. 



Already Kroi/rr calls the attention to the fact that no young ones of this 

 fish on to be found in the Cattegat, and I never saw any specimens from this 

 sea smaller than 10 inches. Pleur. cynoglossus seems to be a deep-sea fish 

 which, as a rule, does not breed at all in our seas. 



Judging from the development of the sexual organs in spring, it does 

 not seem unlikely that its spawning-season occurs in summer, as it has 

 from various sides been stated to do. Its young ones are known from the 

 shores of Norway on deep water [Lilljeoorg, p. 393) and from the shores of 

 Ireland on 80 fathoms of water (see Holt : Survey of Fishing Grounds, p. 343). 

 It is seen from the tallies that also the males of this species are somewhat 

 smaller than the females with regard to the average as well as to the 

 maximum size. I do not know ever having heard any complaint of a decrease 

 in size and number of this species of fish in our seas, which agrees well with 

 the supposition that it is not till it is grown-up that this fish enters our seas 



