A Month on the Tromlhjcm Fiord. 267 



XXIX. — A Month on the Trowlhjeni Fion/. 



By the Kcv. Canon Nokman, M.A., D.C.L., F.R.S., &c. 



[Continued from p. 1G4.] 



[Plate XII.] 



[The reader is requested to make the following corrections in 

 the preceding Table of Distribution : — 



P. 162, for Ileteroiuysis read Ilumimysis. 

 „ for Chiroiuy^is read lleteromysis. 

 P. 163. The S in column 14 should be opposite Eudorella truncatula 



instead of E. emaryinata. 

 P. 164, column l-J. Put N instead of? opposite Cuinpi/la-spis costata.] 



This Table of Distribution of the Higher Crustacea of 

 Norway contains one hundred and seventy-eight species. 

 The distribution of these species may be summed up as 

 follows : — 



Species which occur both to the north and to the south 



of Norway 30 



Species known only to the north of Norway 19 



Species known only to the south of Norway 104 



Species here recorded only as Norwegian 25 



178 



But of these last twenty-five species Bythocaris Payerl^ 

 Heller, has a wide distribution in the great depths of the cold 

 area of the North Atlantic, and Euphausia yellucida^ Dana, 

 is an oceanic form with world-wide distribution ; and although 

 this species is not marked in the Mediterranean column, it 

 should have been so, since Euphausia Mulleri^ Claus, is a 

 synonym. 



Deducting these two species, we have twenty-three re- 

 maining which are as yet unknown beyond the Norwegian 

 seas. 



Of the 178 Norwegian species, 121 are known in British 

 seas and 57 reach the Mediterranean^ while 44 occur on 

 the N.E. coast of North America. A study of the table will 

 show that the species common to Norway and N.E. America 

 are, with the exception of Carcinus mcenas^ Eupagurus 

 BernharduSj and Grangon vulgaris^ either Arctic or deep- 

 water forms. 



The Isopoda of Norway differ in general character from 

 those of the British sea by the fact that the family Sphtero- 

 mid£e is only represented by the single species Limnoria 

 lignorum ; this family is altogether unknown in the Arctic 

 seas, and in Denmark only two forms occur, Limnoria 

 lignorum and Sphceroma rugicauda. On the other hand, the 



18* 



