24 NILS ODHNER, NORTHERN AND ARCTIC INVERTEBRATES. V. PROSOBRANCHIA. I DIOTOCARDIA. 
General Distribution: 
Norway: Finmark southwards, 1. 30 (G. O. Sars 1878; 1. 47, M. Sars 1858; 
Friele 1874; Schneider 1881, 1885, 1891, 1894; Aurivillius 1886; Bidenkap 1897; De 
Guerne 1886, 0—124 m; Norman 1902; Nordgaard 1907). — Christianiafjord (As- 
björnsen 1854; Jeffreys 1870, to 40 fms). — Bohuslän (Lovén 1846; Malm 1855). — 
Göteborg Skärgård (Malm 1858). — Kullen (Lovén 1846; Lilljeborg 1852"). — Katte- 
gatt, rare, Öresund, more common, Zostera; max. 1. 29 (Mörch 1871; Petersen 1888), 
+ var alba. — Öresund: Hven—Landskrona: Sofiero, 10—17 m (Lönnberg 1898). — 
Kiel, 1. 20 (Meyer & Möbius 1872). — Iceland (Mörch 1869; Verkräzen 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 (Collin 1887). — Behring 
Sea, Arctic Ocean, Alaska to Sitcha (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 0—450 fms. Stones, rocks, mud, alg&e, Zostera. 
Acme&ea virginea (MULLER 1776). 
RN i 
Habitat: 
West coast of Sweden: Skåne, NW off Sofiero, 1 sp., 1. 5 (Lönnberg '"/6 1902); 
Kullen (LirrJjeEBORG 1855) 2 shs, max. 1. 7; br. 4.7; h. 2.8 (Mus. UI vHalland: 
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 ""/,.1902); Fig. 105 .0ff Varberessitshivl: 
4.s (Torell). — Kattegatt: Lilla Middelgrund, 1 sh., 1. 4.6 (Gunhild Exp. 1878); about 
!/, mile NE of lightship Fladen, 40 m, clay, mud, 2 sps, max. 1. 4.8; br. 3.6; h. 2 
(2/9 1911). — Bohuslän (Fig. 10): N. Åstol—Dyrön, Marstrand, 18—36 m, 2 sps, max. 
I. 7 (Lagerberg ??/ 1906); Gullmarn: Strömmarna, 10 fms, stones, 4 sps, max. 1. 6 
(N. Odhner !!/s 1907); Strömmarna—Lunnevik, 18 m, mud, 1 sp., 1. 4.2 (N. Odhner 
17/7 1907); Skatholmen, E of the fine sand, 5—6 m, stones, gravel, alg&e, 3 sps, max. 
1. 8.5 (22/5 1903);  D:0,' fine 'sand with shells, 6'sps, max..I. 6.4 (""/sand”"/&ew1 908); 
Skårberget, 2 sps, max. 1. 6.3 (Lovén); Flatholmen, NE point, 1 sp., 1. 5.5 (5/7 1906); 
other localities see THÉEL (1907). — Väderöarna, sand, clay, 4 sps, max. 1. 9 (A. 
Goäs); D:o, 100 fms, 1 sh. — Dyngö, 10 sps, max. 1. 5.4 (4. Goös). = Koster; 2—5 
fms, inside the islands, 1 sp., 1. 9 (Ljungman 1865); D:o, 15—20 fms, rocks, 1 sp., 
