Nr. 5] THE CEPHALOPODA DIBRANCHIATA 11 



operation at East Spitsbergen lasted from the end of June to the 

 end of August. In these summer months of 1889 eggs of R. glau- 

 copis were obtained. Eggs with embryos of the same species in a 

 sponge were also tåken by Duc D 'Orleans at St. 45, 17°31' N., 

 18°24' W., 275 m., V« 1905 (Grieg. 1909, p. 39, pl. 79, fig. 18). — 



Biological differences in the 2 species of Rossia may be summed 

 up in the sequel. 



R. macrosoma. R. glaucopis. 



Eggs fixed to things on hard Eggs enclosed in soft spon- 



bottom, colour light blue, ges, colour greyish white, 



diam. 9 — 10 mm. Eggs with diam. 7 — 9 mm. Eggs with ma- 



macroscopic embryos observed croscopic embryos observed 



in the 2th and lOth month of from 6th to 8th month of the 



the year. There is an embryo- year. There is no embryonic 



nic rostral point (figs. 2 and 4). rostral point. 



Loligs forbesi Steenstrup. 



In V. Storm's collection of the Trondhjem Museum there is a 

 species of Loligo marked L. forbesi, Trondhjem. I suggest the de- 

 termination is correct as the fin is going around the end of the body. 



Architeuihus dux Steenstrup. 



This species, of course, does not belong to the fauna of the Trond- 

 hjem Region, hut it is noted here because it has happened that this 

 gigantic cuttlefish is driven ashore. Two specimens from Kirksæ- 

 terøren in Hevnefjord ( $ ^7* 1896, (^ -'/q 1896) are preserved in the 

 Trondhjem Museum (V. Storm, 1897, p. 97—102). A third strand- 

 ing of Architeuthus took place ^'/s 1916 at Hellandsjø west of the 

 mouth of the same Hevnefjord. The specimen was found on the 

 beach and the observer, Johan .F. Vaagan.couM see the arms a 

 little moving and a boy who placed his foot on the suckers made the 

 experience that his shoe was inmediately fastened and he must 

 draw his foot out of it. The body was used as bait and I got only 

 some remnants. Length of the tentackles 6.2 m. On the short arms 

 the suckers were arranged in 2 series. On the tentackle clubs there 

 were 4 series of suckers which were of different size, viz. 2 files of 

 great suckers in the middle, surrounded by a file of small suckers 

 Qn each side. 



Strandings of Architeuthus on the Norwegian coasts in later years 

 are recorded by A. Brinkmann (1916). There is only øne occurence 

 to be added. In November 1919 a gigantic cuttlefish stranded in 

 Øyvåg of Donna off the coast of Nordland\ On the European side 



^ Helgelands Blad, Nr. 141, ^^u 1919. 



