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; Bidenkap 1897; Aurivillius 1886; De Guerne 1886; 
Norman 1902; Nordgaard 1907; Lilljeborg 1851). — OChristianiafjord (Asbjörnsen 
1834; Jeffreys 1870, 0—100 fms). — Bohuslän, 1—60 fms (Malm 1855); Göteborg 
Skärgård, Vinga, 16—23 fms (Malm 1858); Hallands Väderö (Lönnberg 1903); Kullen 
(Lovén 1846; Lilljeborg 1855). — Kattegatt to Hven, 7—16 fms (Mörch 1871; Peter- 
sen 1888). — Öresund, 10—22 m (Il. 8; Lönnberg 1898). — Iceland (+ var. lactea, 
Verkräzen 1872; Johansen 1902; Odhner 1910). — Faroes (var. orbicularis, Mörceh 
1868). — N. of Hebrides, 530 fms (Jeffreys 1882). — British Isles (Jeffreys 1865, 
1882). — Dogger Bank (+ var. lactea, 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 (Carus 1889). — Off Morocco; Ma- 
deira; Canaries; Cap Verde Isles; Azores; St. Helena; to 650 fms (Jeffreys 1882). 
Depths 0—650 fms. Stones, sand, clay, corals, algee. 
Var. spitzbergensis n. var. 
Pl. 1 figs. 14—15. 
Habitat: 
Spitzbergen: Treurenburg Bay, 1 sh., 1. 10.9; br. 8.2; h. 3.9. — Mossel Bay, 
14 fms, Lithothamnion, sand ('”1 1873), 1 sh., 1. 10.3; br. 7.4; h. 3.8. Both these 
shells are of a relatively fresh appearance and probably not subfossil. 
Acmea rubella (FABRICIUS 1780) 
(inel. var. elevata ODHNER 1910). 
2 Ng ö-2A 
Habitat: 
Northern Norway: Ramsfjord, 9—13 fms, 1 sh., 1. 2.8; br. 2.9; h. 2.7; curved 
inferior margin (Torell); Kjosenfjord, ebb, alg&e, stones, 1 sh., 1. 5.3; curved inferior 
margin (Goöés & Malmgren ””/10 1861); Grötsund, 4 fms, shells, 1 sh., 1. 4.6; curved 
inf. marg. (G. & M. 1861), Fig. 20; Karlsö, N. of Tromsö, 5—15 fms, rocks, 1 sp., 
1]. 5.7 (LECHE 1878); Finmark, without definite locality (Lovén) 1 sh. (Fig. 21). 
Kola Peninsula: Waideguba, off the harbour, with surface net, 1 sp., 1. 2.8 
(Sandeberg ?/1 1877). 
