18 O. NORDGAARD [1915 



Zeugopterus punctatus Bloch. 

 This species (Mullers topknot; Norw.: haarflyndre) appears 

 to be more common than the one last mentioned. I can thus 

 quote the following linds: 



12 /io 1898. Hegdalen (K. Dahl), 1 spee. 1. 6.5 cm. 

 3 % 1908. Netted near Munkholmen, a spent $ 1. 17.3 cm. - 



Remains of gobidæ in ventricle. 

 12 /2 1909. Selven, Trondhjemsfjord, 1 spee. 1. 5.7 cm. 

 2 /6 1913. Fjeldværø, Hittra, 1 spee. 1. 6.2 cm. 

 6 /.s 1914. Skarsbngten, Rissa, 1 spee. 1. 4.7 cm. 

 22 /8 1914. Høvringen, near Trondhjem Biol. St., 1 spee. 1. 9.8 cm. 

 17 /io 1914. Sauøen, Froan, 1 spee. 1. 20 cm. 



On the 29 /4 1916, two specimens of Z. punctatus were tåken 

 at Ilsviken, and placed in the aquarium. The Iarger specimen 

 was a $ with swollen ovaries. The largest size hitherto known 

 for this species from the district is 20 cm., and for Trondhjem 

 Fjord 17.3 cm. 



Arnoglossus laterna Walb. 

 This species (scaldback; Norw.: tungehvarr) is new to the 

 Trondhjem Fjord, and has not hitherto been recorded north of 

 Tananger, on the Stavanger coast, where three specimens were 

 tåken in the course of Dr. Hjort's fishing experimenls in August 

 1898. On the Vs 1916, while dredging at Ilsviken, near Trond- 

 hjem, we obtained a $ of this species, 1. 8 cm. This was in 

 quite shallow water, with bottom of mixed sand and clay. The 

 lish was greyish brown in colour, with small dark spots at the 

 base of the dorsal and anal fins. Remains of amphipoda and 

 isopoda in the ventricle. Ovaries distended with quite small 

 eggs. Collett states also, in his latest report: »In the Chri- 

 stiania Fjord, the females were full of roe in the months of 

 June — July, but we may in August still find females not yet 

 spent «. 



Pleuronectes pkttessa Lin. 

 Some particulars with regards to the plaice (Norw.: guld- 

 flyndre) will be found in my two reports on the hatching expe- 

 riments at Trondhjem Biological Station (D. kgl. n. vid. selsk. 

 skr. 1909, nr. 7, and 1913, nr. 6). These two papers may thus 

 also be included among the sources of information as to the 

 fish fauna of Trondhjem Fjord. In the second of these reports, 

 I mentioned some enemies and competitors of the species. At 

 times, the plaice may be lucky enough to excape from the jaws 

 of a sea otter or a seal; an instance of this may be quoted 

 here. A plaice laken on the 30 /]0 1914, at Ranheim, Strindlandet, 



