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Both Raffaele and M'Intosh have given pictures of various specimens of 

 Rhombus. I can only say with certainty that the one represented in »11. Annual 

 Report. Fishery Board for Scotland«, table XII, fig. 7, is a turbot; for the charac- 

 teristic spines of the head are here suggested, however slightly. 



Fig. 14, plate XIV, in »10. Report « is, 1 dare say, also a turbot. 



According to the number of rays (80 in the dorsal, 60 in the anal fin), one 

 might decidedly think that Rafaele's fig. 8, plate 4, was a brill, what he himself 

 also supposes it to be; but the figure certainly is more like a turbot, both with 

 regard to the form of body and fins, and with regard to the pigmenting. Of his 

 two other figures I cannot say anything for certain neither, as they show nothing 

 of the spiny equipment of the head; to judge from the length of the snout in all 

 the figures, the fish represented, however, must be supposed to be brills. — Holt 

 has in J. M. Biol. Assoc. (N. S.) vol. II, pp. 401 — 404 given a closer description 

 of a number of little young Rhombus, which in many ways, for instance in the 

 spiny equipment of the head, agree with my young specimens of R. waximus, 

 only his young ones want every trace of spines on the shoulder. He supposes, 

 however, that they belong to R. maximus. Till the publishing of his further ac- 

 counts I shall not enter into this question. — 



Of Arnoglossus laterna I know no specimens in the true larval state, i. e. be- 

 fore the pectorals have got true rays ; the youngest specimen before me, from Hval- 

 0eme, caught by G. 0. Sars, is 23 mm long and furnished with scales; the outlines 

 of it are given plate II, fig. 17, particularly in order to compare it to the young 

 ones of the other species of flat-fishes. The specimen agrees in all principal rela- 

 tions with the grown-up animals. — Of the genus Zeugopierus I have before me 

 a young specimen of Z. norvegicus, 13 mm long, caught by G. 0. Sars at Flekkero 

 in Norway ; as yet it has no rays in the pectorals, nor has it any scales. In spite 

 of its small size it resembles the advilt fish (cmp. plate II, fig. 16), in its whole 

 form as well as in the peculiar position of the eyes, and in the character that the 

 two median fins are turned round on the right side of the tail; by this means if 

 by nothing else, it is easy to determine both its genus and its species. 



Of Zeugopterus pwnctatus I have also before me a pretty little specimen, 13 mm 

 long, taken in August at Boclo by 67. 0. Sars (plate II, fig. 15\ The form of the 

 fish agrees in all principal relations with that of the grown-up animal, but the pec- 

 torals have yet only traces of true rays. The distribution of the colours is peculiar 

 however, the left side of the animal being dotted with roundish, dark spots of 

 about the same size, evenly distributed over the whole fish, both on head, body, 

 and fins; among these dark spots there are pointed, soft warts like those which 

 are found on the somewhat older animals. 



The fins being turned rand on the right side of the tail, the position of the 

 ventral fin, the far projecting dorsal fin, etc. do not leave the slightest doubt that 

 this fish is a young Zeugopterus punctaius; it cannot be Z. norvegicus, nor Z. mega- 

 stoma whose young ones are quite unknown to me; its fin-equipment at the tail 

 must make its young ones easily distinguishable from the two other species of 

 Zeugopterus, and no more species, we know, are living on the shores of Norway. 



