40 N. ODHNER, NOBTHERN AND ARCTIC INVERTEBRATES. VI. PROSOBRANCHIA. 2 SEMIPBOBOSCIDIFEEA. 



(Gould & Binney 1870). — Nova Scotia to Cape Hatteras, 12—65 fms, dead, 75—1290 

 fms, living (Verrill 1882—85). — Heard Island, S. S. E. of Kerguelen, 75 fms (Watson 

 1886). Depths down to 1290 fms. Clay, sand, stones. 



Lunatia tenuistriata (Dautzenberg & Fischer 1911). 



Pl. 4, Figs. 9 — 15; Pl. 5, Fig. 19. 



Habitat: 



Kola Peninsula: Litza (Sandeberg Vs 1877), 1 sp., h. 7.7; ap. h. 6.5; br. 7.3; ap. br. 

 3.7; umb. 3; sut. 2; wh. 4. 



Kära Sea (among Natica pallida of Leche 1878): Matotschkin Shar, 7 sps, max. h. 

 20; ap. h. 16; br. 19; ap. br. 9. o; umb. 7; sut. 5..3; wh. 5 y.; h, 12.7; ap. h. IO.5; br. 11. c; 

 ap. br. 6.3; umb. 4.4; sut. 3; wh. about 5 (Fig. 13). — Gostinoj — Korepowskoj, fossil, 

 max. h. 19; ap. h. 15; br. 16.0; ap. br, 8.0; umb. 6.3; sut, 4.;-); wh. about 4. 



North of Siberia and Behring Sea (among Natica pallida and groenlandica; Auri- 

 viLLius 1887): Vega St, 14, 10 fms, sand, clay, 1 sp,, h, 4 (placed by Aurivillius among 

 Natica clausa), — Vega St. 40, 1 sh., h, 25; ap, h, I8.3; br. 20.3; ap. br. 11; umb. 8.7; 

 sut. 6.4; wh. about 5 (Figs. 14, 15). — Vega St. 57, 1 sh., h. 21.3; ap. h. 18; br, 19; ap, 

 br, 11; umb, 8,4; sut. 4.3; wh. about 5 (apex eroded). — Vega St. 75, 1 sp., h. 3; ap. h. 

 2.0; br. 3; ap. br. I.7; umb. l.i; sut. O.5; wh. 3. — Vega St, 1056, 1 sp., h. 8; ap. h. 7; br. 

 7.4; ap. br. 4; umb, 3; sut. 1,4; wh. about 4. 



Spitzbergen: Ice Fiord, Sassen Bay, 30 fms, clay (Aug. 1861), 1 sh., h. 29.6; ap. h. 

 25; br. 24.2; ap. br. 14; umb. 13.2; sut. 6.1; wh. 6; the shell is of a fossil appearance and 

 somewhat broken (part of the body whorl löst); D:o, Advent Bay, 11 — 70 m, mud (Sp, 

 Exp. 1908, St. 45,72), 25 sps, max. h. 32.5; ap. h. 25; br. 26; ap. br, 14,8; umb, 13; sut. 

 8; wh. 6; umbilicus of this sp. narrowed, nearly closed; an other sp. h. 27; ap. h. 22.i; 

 br, 22,5; ap, br. 12.o; umb. ll.o; sut, 5,2 (Pl, 4, Fig, 12; radula, Pl, 5, Fig, 19);D:o,d:o, 

 30 fms, clay (Torell 1858), 1 sp,, h, 5.4; ap. h. 5; br, 5,3; ap, br, 2.7; umb. 2; sut. 1; wh. 3. 

 — Prince Charles Foreland, 5 fms, sand ("/? 1872), 2 sps, max. h. 22.7; ap. h, 19,5; br, 

 20.7; ap. br. 12.2; umb. 8; sut. 4; wh. 5; and h. I6.4; ap. h. 13.7; br. 14.o; ap. br. 8; umb. 

 6.8; sut, 3.1; wh. 4 '%. — Hakluyts Headland, 2 fms, stones (Torell), 1 sh., h. 26.3; ap, h, 

 20,4; br. 23.5; ap. br. 11. 5; umb. 10; sut. 6.4; wh. 5 V3, — Mossel Bay, 1 V.— 10 'A fms, algae, 

 sand, Lithothamnium (1872 — 73), many sps, h, 16; ap. h. 13.5; br. 14.8; ap. br. 7.7; umb. 

 6; sut. 3.3; wh. 4 V2; an other sp. h. 15; ap. h. 12.7; br. 14; ap. br. 7.5; umb. 6; sut. 3; wh. 

 5, — Treurenburg Bay, 5 — 20 fms, stones, clay (1861), 3 sps, max, h, 10,8; ap. h, 9. 5; 

 br. 10.7; ap. br. 9,(i; umb. 4.2; sut. 2.i; wh. about 5; and h, 8,0; ap. h. 7.3; br. 8.2; ap. br. 

 4,5; umb, 3.5; sut, 1,2; wh, about 4, — Hinlopen Strait, 10 — 25 fms (1861), 1 sh,, h. 18; 

 ap, h, 15,7; br, 18; ap, br. 8.7; umb. 6.8; sut. 4.2; wh. about 4 '/a- 



East Greenland: Mackenzie Bay, N. of Franz Joseph Fiord, 3 — 10 m, mud, sand, 

 Laminarice (Polar Exp. >'/, 1900), 1 sp., h, 12.3; ap. h. IO.3; br, 11; ap. br. 6.3; umb. 4.5; 

 sut. 2.5; wh. 4 V^; cuticula orange, mantle of animal blackish (Fig. 9; placed by Hägg 

 1905 among Lunatica groenlandica. No. 1), 



