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



Greneial Distribution: 



Norway: Finmark southwards, 1. 30 (G. O. Sars 1878; 1. 47, M. Sars 1858; 

 Friele 1874; Schneider 1881, 1885, 1891, 1894; Aimvilliiis 1886; Bidenkap 1897; De 

 Guerne 1886, — 124 m; Norman 1902; Nordgaard 1907). — Christianiafjord (As- 

 björnsen 1854; Jeffreys 1870, to 40 fms). ~ Bohuslän (Loven 1846; Malm 1855). — 

 Göteborg Skärgard (Malm 1858). — Kiillen (Loven 1846; Lilljeborg 1852^')- — Katte- 

 gatt, rare, Oresund, more common, Zostera; max. 1. 29 (Mörch 1871; Petersen 1888), 

 + var alba. — Oresund: Hven — Landskrona: Sofiero, 10 — 17 m (Lönnberg 1898). — 

 Kiel, 1. 20 (Meyer & Möbius 1872). — Iceland (Mörch 1869^ Verkrüzen 1872% + var. 

 pallida; Posselt & Jensen 1899; Johansen 1902). — Faroes (Mörch 1868). — Great 

 Britain (Jeffreys 1865). — Dogger Bank (Hargreaves 1910). — Azores, 15 m to 450 fms 

 (Dautzenberg 1889; Watson 1886), — Russian Lapland (Middendorff 1849). — Murman 

 coast. White Sea; Nova Zembla (Herzenstein 1893, Dautzenberg 1911). — Kolguev, 10 

 fms (Melvill & Standen 1900). — Kara Sea. 12 fms, 1. 16 (CoUin 1887). — Behring 

 Sea, Arctic Ocean, Alaska to Sitclia (Dall 1878). — Japan, 7 fms (Jeffreys 1876). — 

 Amur, 1. 37 (Schrenk 1867). — Greenland, to 100 fms (Posselt & Jensen 1899; Grieg 

 1909, 1. 25). — Cumberland Sound (Pfeffer 1886). — Parry Islands, 12—15 fms 

 (Sutherland 1852; Reeve 1855). — E. Canada, to 15 fms (Whiteaves 1901). — New 

 England, 1. 18 (Gould & Binney 1870). — Mexico (Jeffreys 1869). — Antilles {fide 

 Meyer & Möbius 1872). Depths — 450 fms. Stones, rocks, mud, alga?, Zostera. 



Acmsea virginea (Müller 1776). 



ri. 1 figs. 9—15. 

 Habitat: 



West coast of Sweden: Skane, NW off Sofiero, 1 sp., 1. 5 (Lönnberg ''U 1902); 

 Kullen (Lilljeborg 1855) 2 shs, max. 1. 7; br. 4.7; h. 2.3 (Mus. U.). — Halland: 

 lighthouse of Väderö in SSW, point of Höghalla in ESE, 15 fms, shells and gravels, 

 2 sps, max. 1. 9.5; br. 7; h. 5.7 (Lönnberg ''/i 1902); Fig. 10; off Varberg, 1 sh., 1. 

 4.8 (Torell). — Kattegatt : Lilla Middelgrund, 1 sh., 1. 4.6 (Gunhild Exp. 1878); about 

 V* mile NE of lightship Fladen, 40 m, clay, mud, 2 sps, max. 1. 4.8; br. 3.6; h. 2 

 (-■Vo 1911). — Bohuslän (Fig. 10): N. Astol— Dyrön, Marstrand, 18—36 m, 2 sps, max. 

 1. 7 (Lagerberg "^'t 1906); Gullmarn: Strömmarna, 10 fms, stones, 4 sps, max. 1. 6 

 (N. Odhner 1907); Strömmarna— Lunnevik, 18 m, mud, 1 sp., 1. 4.2 (N. Odhner 

 ^Vt 1907); Skatholmen, E of the fine sand, 5—6 m, stones, gravel, algse, 3 sps, max. 

 1. 8.5 ("Ve 1903); D:o, fine sand with shells, 6 sps, max. 1. 6.4 ("Ve and Vs 1903); 

 Skarberget, 2 sps, max. 1. 6.3 (Loven); Flatholmen, NE point, 1 sp., 1. 5.5 (Vt 1906); 

 other localities see Theel (1907). — Väderöarna, sand, clay, 4 sps, max. 1. 9 (A. 

 Goes); D:o, 100 fms, 1 sh. — Dj^ngö, 10 sps, max. 1. 5.4 (A. Goes). — Köster, 2—5 

 fms, inside the islands, 1 sp., 1. 9 (Ljungman 1865); D:o, 15 — 20 fms, rocks, 1 sp., 



