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



1873) 1 sli., h. 20.5 (striata), - Lomme Bay, 5 — 15 fms, algse, stones, clay ('7,, 1868) 

 2 sps, max. h. 15. (striata), D:o, 25 35 fms, clay, stones (% 1868) 3 sps, max. h. 

 18.3 (striata). Loven's Mount, 36 fms, clay with stones ('Vo 1868) 3 sps max. h. 

 6.;!; d. 7.5; wh. 5 (typica), Hinlopen Strait, 10 — 25 fms, stones, clay (1861) 7 sps, 

 max. h. 18 (var. striata); D:o 15 20 fms, clay with stones (1861) 2 sps, max. h. 

 16 (striata). Shoal Point, 20 -30 fms, clay (1861) 3 sps, max. h. 20 (striata). — 

 Castren's Islands, 30 — 40 fms, clay, stones, 1 sp., h. 7.4 (striata). ~ Parry Island 

 (1868) 2 sps, max. h. 5.i; ap. 3; d. 5.8; wh. 472 (type?). 



Spitzbergen, East coast: King Charles Land, Swedish Foreland, 12 — 20 m, fine 

 blackish gray clay (®/s 1898) 2 sps, max. h. 17; d. 19 (striata); D:o, Bremer Sound, 

 100 — 110 m, fine clay with big stones, Biloculina sparse; bottom temp. — 1.45° (% 

 1898) 9 sps, max. h. 14.4; ap. 7; d. 14.2; wh. 6 (striata: many fine umbilical cords; 

 angular keel feeble; 10 spiral keels on the whorls; sutures deep). Walter Thymen 

 Strait, the mouth, 30—40 fms (1864) 1 sp., h. 20; ap. 11; d. 20; wh. 672 (striata). 

 — Stor Fiord, 5—10 fms, clay (-73 1864) 10 sps, max. h. 19 (striata); D:o, 4-7 

 fms, fine clay ("'/s 1864) 3 sps, max. h. 10; ap. 4.5; d. 9.i; wh. 6 (typical; with an 

 angular keel and 1 coarser spiral ridge). — Whalers Point, 20—30 fms, clay ('7^ 

 1864) 5 sps, max. h. 17; ap. 9; d. 19; wh. 6 (umbilicus wide without surrounding 

 keel; no angular keel; striata). 



Iceland (Odhner 1910). Measurements: Berufjord, forma typica, max. h. 12.3; 

 ap. 5.5; d. 11.1 ; wh. 7 (spiral ribs 8, of which 2 stronger; angular keel feeble; um- 

 bilical keel strong; base convex, with strong cords; Fig. 33). — Hofsas, h. 12; ap. 

 5.11; d. Il.t2; wh. 672 (10 ribs; base convex with dense feeble cords; no angular or 

 umbilical keel). — Bjarnanes, li. 12. 12; ap. 7; d. 13.8; wh. 5 7'4 (ribs 6 of which 3 

 somewhat stronger; no angular keel; umbilical keel rather feeble; base flat, nearly 

 smooth). Berufjord, var. striata, h. 20; ap. 10; d. 21.8; wh. 6 7+, no angular and 

 a feeble umbilical keel; spiral keels 4, of equal strength (fig. 35). 



West Greenland (Posselt & Jensen 1899). Further: Cape Dudley Digges, 30 

 —40 m, mud (E. Nilson '/i 1894) 1 young sp., h. 2.5 (type). — 72° 8' N., 74° 28' W., 

 30—80 m, hard mud (E. Nilson " . 1894) 3 sps, max. h. 15; ap. 7.-'; d. 14.7; wh. 

 6 7* (striata; no trace of the umbilical keel; umbilicus wide and surrounded by many 

 fine cords; spiral sculpture disappearing on the last whorl). — Measurements: Omenak, 

 h. 8.J; ap. 3.s; d. 8. '., wh. 5 72 (grandis). — Proven, h. 14; ap. 7; d. 15; wh. 674 (forma 

 multilirata) : 14 fine and dense ridges on the whorls, on the upper ones 2 primary 

 ridges; no angular nor umbilical keels (grandis). Fig. 30 34. Godthaab, h. 11.5; 

 ap. 5; d. 10.5; wh. 6 7+ (forma typica): 3 6 (7) strong spiral keels on the whorls; 

 base smooth or strongly sculptured ; angular keel strong ; umbilical keel distinct or 

 sometimes replaced by a few feebler ones, Fig. 28. — Godhavn, h. 12; ap. 6; d. 

 11.8; wh. 6, Fig. 29. 



East Greenland (Hägg 1905), Mackenzie Bay, max. h. 21; ap. 11. 2; d. 21.5; 

 wh. 7 (striata). • — Pendulum Islands, 2 sps, var. grandis, the one sp. with stronger 

 and unequal spiral keels and feeble angular and umbilical ones, the other sp. with 

 feebler spiral keels and no umbilical nor angular ones. — Scoresby Sound, Harry's 



