19 



During the fishing season of 1889 a great deal of measurements 

 and weighings were undertaken. The length varied between 74 and 

 100 cm., and the weight of the fish in round condition averaged 

 from 4.5 to 8.8 kg. for different fishing stations. Sometimes spe- 

 cimens are caught of unusual size. On April 13th, 1888, two 

 fishes were caught off Skraaven, weighing 31 and 37 kg. respec- 

 tively, and off Svolraer, on March 17th in the same year, a cod 

 was caught measuring 1.45 m. in length, and 1.02 m. roung the 

 belly, the weight being 43 kg. (HELLAND, Lofoten og Vesteraalen, 

 p. 161). 



On March 23th, 1897, a cod was taken in a net off Brettes- 

 nses whose length was 1.45 m., total weight 36.5 kg., weight of the 

 roe 6.7 kg., of the liver 3.3 kg. It is not only in Lofoten that 

 cod of such dimensions occur. According to Norsk Fiskeritidende, 

 1887, p. 301, a cod was caught June 7th, 1887, at Losvik in the 



Tana fjord whose length was 1.53 m. and weight in round con- 

 dition 37.5 kg. Of this weight, that of the body was 25 kg., head 

 7.1 kg., liver 2.5 kg., and intestines 2.9 kg. 



In conclusion I give a list of the most important animals that 

 are used as bait for the cod in Lofoten: 



Clupea harengus. 

 Mattotus villosus. 

 Ammodytes tobianus. 

 Gadus virens (juniores). 

 Ommatostrephes todarus. 

 Cyprina islandica. 

 Mytilus edulis. 

 Modiola modiolus. 

 Arenicola piscatorium. 



b. Notes on certain planeton forms. 



Galeolaria (diphyes) truncata, M. Sars. 



A few specimens of this siphonophor I took Feb. 5th, 1898, 

 in the Hjeltefjord near Bergen, at from to 190 m. the largest 

 specimen had a length of 15 mm. 



Mr. M. SARS*) has taken the species at Floro in the months 

 of September, October, and November. 



It has further, been observed by the German North sea Expe- 

 dition of 1872, July 25th, in the surface, near Lindesnes. 



Pleurobrachia pileus, Fabr. 



Till now I have only met with a single ctenophor, viz. p. pileus. 

 It was taken close outside the Bergen Biological Station in the 

 autumn 1896 by the keeper, Mr. GLIMME. The species thus appeared 

 in samples taken from the Puddefjord from November 17th to 24th, 



*) Fauna Littoralis Norvegise, h. I., p. 41. 



1896. Afterwards it has not been seen at this place. In the 

 sample of Nov. 17th a peculiar copepod also occurred, a kind of 

 monstrilla, of which I have published a short characteristic in the 

 Annual Report of the Bergen Museum for 1897. 



Cyphonautes. 



Outside the Biological Station cyphonautes was observed in the 

 planeton in all the months of 1896 and 1897, excepting January- 

 April inclusively. For occurrence elsewhere, see the tables. During 

 the summer of 1896 colonies of membranipora membranacea, Linn., 

 were often seen on the glass panes of the aquariums of the station. 

 These were of course founded by cyphonautes that had entered 

 with the water from the conduit. 



