(). NORDGAARD [1915 



Each of these specimens had four large dark spots, down back 

 and sides, and dark cross stripes in the anal fin. 



A gon us cataphractus Lin. 

 A $ , 1. 17.5 cm., »full« i. e. with roe mature, and ready to 

 spawn, was laken in a cod trap outside the Biological Station 

 at Hegdalen, on the l U 1908. 



Callionyrhus lyra Lin. 

 Specimens of this species (dragonet; Norwegian: >fløifisk«) 

 have of late years been tåken at varions places in and outside 

 Trondhjem Fjord. On the r 'h 1915, a d* in mating dress 1. 26 

 cm. was tåken in the inner portion of Strømfjord, at Hittra, in 

 a trout net, in 3 fathoms of water. I have also examined a $ 

 1. 10.2 cm., laken in Beitstadfjord Sept. 1899, and a $ 1. 10.5 cm., 

 tåken at Steinvikholmen 2 % 1898, also a ? 1. 12 cm., tåken at 

 Venneshavn 29 /5 1899. In the last-named specimen, the eggs 

 were fairly large. A male and two females were tåken in an 

 eel seine near the Biological Station at the beginning of May 

 1915. They were placed in an aquarium, where I had an 

 opportunity of observing the behaviour of the male during mating 

 time. These observalions extended over the period from 20 to 

 30 June 1915. As far as I could see, the male kept to the one 

 female, which would seem to indicate seasonal selection. For 

 the most part, I found the male and female lying resting on 

 the bottom, or taking up a vertical rest position against the 

 walls of the tank. While resting, the dorsal fins were folded 

 down, as also the caudal. The hinder part of the body lay 

 touching the bottom, the forepart slightly raised, the fish here 

 supporting itself by the extreme edge of the ventral fins and the 

 pectorals, which were laid rearwards along the body, with the 

 lower edge curving in under the laterally extended ventral fins. 

 In the vertical rest position, the points of the ventral and anal 

 fins grip on to any irregularities in the supporting surface, the 

 pectoral fins being at the same time kept in motion to maintain 

 equilibrium. While swimming also, the dorsal fins were kept 

 folded down. The ventral fins were extended, as also the anal 

 and caudal fins, but the actual natatory movement was accomp 

 lished by means of the large pectorals, the extreme margins of 

 which moved with an undulating motion. The >courting«, as 

 carried out by the male consisted of an almost continous rolling 

 of the magnificent eves, the fine dorsal fins being also occasion 

 ally unfolded. When moving the eves, the eve balls were turned 

 simultaneously either to right or lefl, the longitudinal axes being 

 thus as a rule parallel, the movement being accompanied by a 



