NORWEGIAN OPISTHOBRANCHIATE MOLLUSCA 



31 



Coryphella salmonacea Gouthouy (non G. 0. Sårs), fig. 13 a. 

 Vadsø, 40—60 fms, 3 sps, max. 1. 20. Lam. lat. of the radula 

 are almost smooth in the margin (as in figs. 22, 27, pi. IV, 

 of Bergh 1864^; lam. med. very high). — This species, which is a 

 true Arctic form, is certainly restricted to the Arctic region of 

 Norway; towards the South it is replaced by the following 

 species. 



Coryphella horealis n. sp. (= C. salmonacea G. 0. Sars, 

 non Couthouy; C. verrucosa Odhner 1907, non M. Sårs 

 1829), fig. 13 b. Mortensnes, 2 sps., 

 max. 1. 12.5— Vadsø, 2—6 fms, 

 many small sps., max. 1. 6; 7 — 10 

 fms, many sps., max. 1. 8; radula 

 with 9 denticles on each side of the 

 median tooth, laterals finely denti- 

 culated; 40—60 fms, 2 sps., max. 

 1. 10— Bugø, 1 sp., 1. 17— Ram- 

 fjord, 50 — 100 fms, 14 sps., max. 

 1. 10 — Selsøvik, 1 sp., 1. 10; ra- 

 dula with 8 denticles on each side of 

 the median tooth, and 13 on the 



laterals — Apelvaer, 40 — 50 fms, 6 sps., max. 1. 12.5— Mebotten,. 

 Storeggen, 50 — 60 fms., 10 sps., max. 1. 12 (G. 0. Sars' proto- 

 type) — Odvaer, 20 fms, 3 sps., max. 1. 10 — Kopervik, 1 sp. 

 1. 10— Rennesø, 1 sp., 1. 5 — Farsund, 1 sp., 1. 8 — Drøbak, 100 

 fms, 3 sps, max. 1. 12 (det. as „Aeolis concinna"); radula typical. 



In examining the type specimens of G. 0. Sars in the 

 Kristiania Museum Collection, I found that these differ in somfr 

 points from the Greenland form, which Bergh (1864) has descri- 

 bed and figured as C. salmonacea of Couthouy. Bergh says 

 in the work mentioned i^ «The head is rather short, produced on 



Fig. 13. a. Coryphella salmo- 

 nacea Couth, b. Coryphella 

 horealis Odhner. 



^ Anatomiske Bidrag til Kundskab om Aeolidierne. Danske Vidensk,. 



Selsk. Skr. 5te Række, 7de Bind. Kjøbenhavn. 

 2 Translated from the Danish. 



