26 NILS ODHNER, NORTHERN AND ARCTIC INVERTEBRATES. V. PROSOBRANCHIA. 1 DIOTOCARDIA. 



General Distribution: 



Norway, Varangerfjord — southwards (G. O. Sars 1878; Friele 1874; Schneider 

 1885, max. 1. 13; 1891, 1894; Bideiikap 1897; Aurivillius 1886; De Guerne 1886; 

 Norman 1902; Nordgaard 1907: Lilljeborg 1851). — Christianiafjord (Asbjörnsen 

 1854; Jeffreys 1870, 0—100 fms). — Bohuslän, 1-60 fms (Malm 1855); Göteborg 

 Skärgard, Vinga, 16 — 23 fms (Mahn 1858); Hallands Väderö (Lönnberg 1903); Kullen 

 (Loven 1846; Lilljeborg 1855). — Kattegatt to Hven, 7— 16 fms (Mörch 1871; Peter- 

 sen 1888). — Öresund, 10 — 22 m (1. 8; Lönnberg 1898). — Iceland (+ var. lactea, 

 Verkriizen 1872; Johansen 1902; Odhner 1910). — Faroes (var. orbicularis, Mörch 

 1868). - N. of Hebrides, 530 fms (Jeffreys 1882). - British Isles (Jeffreys 1865, 

 1882). — Dogger Bank (+var. laclea, Hargreaves 1910). — Heligoland, 2 — 10 fms 

 (Metzger 1875). — North Sea off Holland— Belgium, rare (Maitland 1897). — France, 

 rather common (Locard 1892). — Spain and S. Portugal (Jeffreys 1882); Portugal, 

 rather common (Nobre 1905). ■ — Mediterranean (Cams 1889). — Off Morocco; Ma- 

 deira; Canaries; Cap Verde Isles; Azores; St. Helena; to 650 fms (Jeffreys 1882). 

 Depths — 650 fms. Stones, sand, clay, corals, algae. 



Var. spitzbergensis n. var. 



I'l. 1 figs. 14—15. 

 Habitat: 



Spitzbergen: Treurenburg Bay, 1 sh,, 1. 10.!»; br. 8.'i; h. 3.'.i. — Mossel Bay, 

 14 fms, Lithothamnion, sand C'l 1873), 1 sli,, I, 10.".; br. 7.4; h. 3.«. Both these 

 shells are of a relatively fresh appearance and probably not subfossil. 



Acmsea rubella (Fabricius 1780) 

 (inch var. elevata Odhner 1910). 



PI. I figs. 16—23. 

 Habitat: 



Northern Norway: Ramsfjord, 9 — 13 fms, 1 sh., 1. 2.8; br. 2.9; h. 2.7; curved 

 inferior margin (Torell); Kjosenfjord, ebb, algse, stones, 1 sh., I. 5.3; curved inferior 

 margin (Goes & Malmgren lo 1861); Grötsund, 4 fms, shells, 1 sh., I. 4.6; curved 

 inf. marg. (G. & M. 1861), Fig. 20; Karlsö, N. of Tromsö, 5 — 15 fms, rocks, 1 sp., 

 I, 5.7 (Leche 1878); Finmark, without definite locality (Loven) 1 sh. (Fig. 21). 



Kola Peninsula: Waideguba, off the harbour, with surface net, 1 sp., 1. 2.8 

 (Sandeberg "V^ 1877). 



