46 NILS ODHNER, NORTIIERN AND ARCTIC INVERTEBRATES. V. PROSOBRANCHIA. 1 DIOTOCARDIA. 



9.4; wh. 6 (Fig. 8); Gullmarn (Loven) many sps, different localities, max. h. 10. 0; 

 ap. 5.6; d, 10.9; wh. 6; Stigfjorden (Aurivillius) many sps, max. h. 9.4; d. 9; wh. 

 5%, Fig. 9. — Sydkoster, 5—20 fms (Eisen & Stuxberg 1871) 5 sps, max. h. 8.1; 

 d. 9; wh. 6; W. of Nordkoster, 10^ — 15 fms, clay (Ljungman Vs 1865), 4 sps, max. 

 h. 7.9; Dyngö (Goes) 2 sps. 



Norway: Dröbak, 5 — 6 fms, stones, algse, 8 sps, max. h. 9.2; d. 9.5; wh. 6. — 

 Hitterö, 20 — I.O fms, shells (Oberg 1869), many sps, max. h. 11; ap. 5.3; d. 10.6; 

 wh. 6 " 1. — Jederen, 100 fms, 1 sh., h. 14; d. 13.5. — Stavanger (v. Friesen), 3 shs 

 + 1 sp., max. 9.6 (sh.); 8.6 (sp.). — Hardanger, 75 fms, sand (Bovallius) 1 sh. — 

 Utnefjord, 95 fms (Bovallius) 1 sp., h. 3.c. — Flekkefjord, 15-20 fms (Oberg 1869) 



5 sps, max. h, 8.4, Fig. 13. — Samlenfjord, 220 fms, rocks, 1 sp. + 1 sh., max. (sp.) 

 h. 8.6; ap. 4.1; d. 9; wh. 6. — Storeggen (v. Yhlen), 50 — 140 fms, shingles, 1 sp., 

 h. 8.G; d. 9; wh. 5^U, Fig. 10. - N. W. of Egersund, 50-60 fms (^-/lo 1872) 1 sh., 

 h. 8.3. — Moide, Christiansund and Bergen (Lilljeborg) small sps (Mus. U.). — Fin- 

 mark (Loven) a few sps, max. h. 11.5; d. 11.3; D:o, Grötsund, 4— 30 fms, clay (Goes 



6 Malmgren 1861), many sps, max. h. 12.5; ap. 5; d. 11.4; wh. 6%, Fig. 14; Karlsö- 

 sund, 15 fms, stones, corals (1861), many sps, max. h. 10; d. 9.4; wh. 6^2; Tromsö, 

 20 fms (1861), 1 sp. ; h. 7.6; Kjosen, 30 fms, clay (1861), many sps, max. h. 13.7; ap. 

 6.3; d. 11.8; wh. 6 Fig. 12; Ulfsfjord (1861) many sps, max. h. 13.2; d. 13, Fig. 11. 



Kola Peninsula: Waidaguba (Sandeberg ^'79 1877) 1 sp., h. 8.8; ap. 4; d. 

 8.3; wh. 5. 



Iceland (Odhner 1910); Reykiavik, 1 sp., h. 8. 



Limits of formal variation: 



Scandinavia ; 



Height. 



of shell 



4—5 



6—7 



8—9 



10—11 



12- 



13 



13 



14 



max. 14 (Jederen) 



100 sps 



Height of < 



iperture 



2.2—3.2 



3.2—3.9 



3.8—4.8 



4.4— 58 



5— 



6.5 



5 5- 



-6.7 



6.5 



measured 



Diameter 



of sliell 



4.8 — 6.8 



6.8—8.8 



8—10 



9.2 — 11 



10.3- 



13 



11.2- 



13.5 



13.5 







Whorls 



4 V-— 5 



5 - 5 '/4 



5 Vi— 6 



6-6 7* 



6- 



7 



6- 



-7 





In comparison with the preceding species the variation breadth is smaller and 

 the difference in size between maximal specimens of Sweden and Norway is not so 

 striking. Specimens from Finmark are usually more elevated than elsewhere. 



General Distribution: 



Norway: Vadsö and Vardö, southwards, 100 fms (d. 10, G. 0. Sars 1878; Friele 

 1874; Schneider, h. 11, 1885; 1881; 1891; 1894; Bidenkap 1897; Aurivillius 1886; 

 Norman 1902). — Christianiafjord, 10-100 fms (Asbjörnsen 1854; Jeffreys 1870). — 

 Bohuslän, 14—35 fms (Malm 1855); Göteborg Skärgärd (Malm 1858); Hallands Väderö; 

 Skelderviken (Lönnberg 1903); Kullen (Lilljeborg 1852^). — Kattegatt to 24 fms 

 (Mörch 1871, Petersen 1888). — Oresund, to S. of Hven, 22—29 m. (h. 11; Lönnberg 

 1898). — Iceland (Mörch 1869^ Verkrüzen 1872). — Faroes (d. 10, Mörch 1868). — 

 S. W. of Faroe Isles, 650 fms (Jeffreys 1883). - British Islands (Jeffreys 1865). — 



