16 N. ODHNER, NORTHERN AND ARCTIC INVERTEBRATES. VI. PROSOBRANCHIA. 2 SEMIPROBOSCIDIFERA. 



Siberia and Behring Sea (Aurivtllius 1887^. Measurements: Vega St. 15, 3 sps, 

 max. h. 8. — ■ Vega St. 21, 2 sps, max. h. 17.3; ap. h. 14.2; br. 15; ap. br. 9; umb. 5.8; sut. 

 4.5; wh. 5? — Vega St. 40, 15 sps, max. h. 28.7; ap. h. 22; br. 26; ap. br. 15.3; umb. 9; 

 sut. 9.5; wh. 61? (radula Pl. 5, Fig. 7). — Vega St. 58, 2 shs and 1 sp., h. (sp.) 31; ap. h. 

 22.8; br. 28; ap. br. 16.7; umb. 9.2; sut. 9.2; wh. 5? — Vega St. 59, 69° 56' N. 174° 27' 

 E., 16 fms, grayish clay, 2 sps, max. h. 30; ap. h. 21; br. 25.5; ap. br. 14.8; umb. 7.5; sut 

 9. — -Vega St. 60, 2 sps, h. 21.3; ap. h. 17. o; br. 21.7; ap. br. 12.4; umb. 7; sut. 6.3; wh. 5; 

 and h. 22; ap. h. I8.2; br, 20.5; ap. br. 12.3; umb. 6.0; sut. 5.4; wh. 5. — Vega St. 1015, 

 1 sh., h. 45; ap. h. 31; br. 36.8; ap. br. 22; umb. 13; sut. 14.5; wh. 6? — Vega St. 1042, 

 many sps, max. h. 45.5; ap. h. 31.2; br. 39.3; ap. br. 22; umb. 13; sut. 14; wh. 6 + (Fig. 

 16). - Vega St. 1044, 1 sp., h. 30.5. — Vega St. 1056, 1 sp., h. 8; ap. h. 6.8; ap. br. 4.5; 

 amb. 2.9; sut. 1.9. — Vega St. 1068, many sps, max. h. 33.5; ap. h. 27; br. 30.3; ap. br. 

 I8.4; umb. 9.0; sut. 10.4; wh. 6? — Vega St. 1075, 3 shs, max. h. 60; ap. h. 44; br. 55; 

 ap. br, 29; umb. 22; sut. 15.5; wh. > 5 (fossil?). 



Norway— Spitzbergen: 70° 10' N. 11° 38' E., 160 fms, stones, sand C7, 1873), 

 1 sp., h. 14.-71° 5' N. 20° E., 125 fms, gravel mixed with clay (^"A 1868), 1 sp., h. 6.5. — 

 72° 10' N. 20° 37' E., 200—230 fms, clay (^V^ 1868), 2 shs, max. h. 3.3. 



Spitzbergen: South Cape, 75° 58' N. 13° 18' E., 56' S. W. of the Cape, 350 m, bot- 

 tom temp. + 2.73°, grayish clay, worm tubes (Vo 1898), 1 sh., h. 11,7; ap. h. 8.8; br. 

 11.2; ap. br. 6.4; umb. 2.9; sut. 3.8; wh. 5. — Off Horn Sound, 76°46' N. 15° 22' E., 210 m, 

 bottom temp. + 2.83°, fine blackish gray clay (^7c 1898), 5 sps, max. h. 11. e; ap. h. 9; 

 br. 11; ap. br. 6.4; umb. 3.3; sut. 3.3; wh. 4 73- — Horn Sound, 20 — 40 fms, stones, clay 

 (7s 1864), 2 sps, max. h. 17.5; ap. h. 13.9; br. I6.2; ap. br. 9.5; umb. 5.7; sut. 5; wh. 5; 

 D:o, 40 — 60 fms, clay, stones (Torell 1858), 5 shs, max. h. 25.4; ap. h. 19.7; br. 25; ap. br. 

 13.4; umb. 8.2; sut. 8.6; wh. 5? — Bel Sound (Torell 1858): 8—12 fms, 3 sps, max. h. 

 16.8; ap. h. 13.4; br. 16.g; ap. br. 9; umb. 5.i; sut. 4.8; wh. 5 +; D:o, 30 — 40 fms, stones, 

 1 sp., h. 24.3; ap. h. 17.8; br. 22.4; ap. br. 13.5; umb. 7; sut. 6.7; wh. 6; D:o, 75 fms, 2 

 sps, max. h. 38; ap. h. 29; br. 35; ap. br. 19.4; umb. 13; sut. 13; wh. 6?; D:o, without de- 

 finite depth, many sps, max. h. 21.4; ap. h, 17.7; br. 19.9; ap. br. 11. 5; umb. 7; sut. 7; 

 wh. 5; D:o (Malmgren -/? 1864), 3 — 6 fms, algse, 2 sps, max. h. 14.2; ap. h. 12.3; br, 

 13.3; ap. br. 7.8; umb. 4.7; sut. 3.7; wh. about 4; D:o (^7? 1873), 7 — 15 fms, 1 sh., bored, 

 h. 10; Recherche Bay, between Reindeer Point and Fox Glacier, 90 m, stones and fine 

 grayish blue clay (7? 1898), 2 sps, max. h. 19.7; ap. h. I6.4; br. 18.6; ap. br. lO.s; umb. 

 7; sut 6; wh. 5; D:o, 40 m, blackish gray clay, sand, stones (7? 1898), 1 sh., h. 8,3; ap, h, 7; 

 br, 7.8; ap. br. 4.8; umb. 3; sut. l.e; wh. 4. — Off Ice Fiord, 120 — 140 fms, clay with 

 stones ('78 1868), 1 sh., h. 7.5. — Ice Fiord, many locahties (Sp. Exp. 1908), Pl. 3, 

 Figs. 7—10; Pl. 5, Figs. 10—12; D:o, 10— 20 fms,clay (1861) many sps, max. h. 20.5; ap. h. 

 15.4; br. 17.8; ap. br. IO.7; umb. 6.7; sut. 6; wh. about 5; D:o, 15 — 30 fms, stones, clay 

 (Torell), 1 sp., h. 33; ap. h. 24.2; br. 30.2; ap. br. I6.4; umb. IO.5; sut. 11. 5; wh. about 6. 

 — Safe Bay, 30—50 fms, bluisli clay (^'7„ 1864), 3 sps, max. h. 18.8; ap. h, 13,6; br, 

 16. 5; ap. br. 9.5; umb. 5; sut. 6; wh. 6. — Green Bay, 30 fms, clay i^^|^ 1868), 4 sps, 



1 AuKiviLuus gives as maximal measuromonts (forma elatior, St. 40): li. 47; ap. li. 31; br. 38; ap. br. 

 19; specimen löst. 



