KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 50. N:0 5. 87 



Fig. 25. The same, Stor Fiord, Spitzbergen (1864), h. 16.3. 



Fig. 26. The same, Kings Bay, Spitzbergen (1868), 15—30 fms, h. 27. 



Fig. 27. The same, Ice Fiord, between Green Bay and Coles Bay (Sp. Exp. 1908, St. 127, 25 m), h. 13.8. X 1.6. 



Fig. 28. The same, Ice Fiord, North Branch (Sp. Exp. 1908, St. 92, 85—45 m), h. 10.4. X 1.6. 



Fig. 29. The same, Ice Fiord (Sp. Exp. 1908, St. 41, 234—254 m), h. 12.7. X 1.6. 



Fig. 30. The same, Arnanes, Iceland, from fish stomachs (Torell), h. 13.5. 



Fig. 31. The same. Finmark, Tromsö, 50 — 60 fms, h. 19. 



Fig. 32. The same, Vega Exp., St. 40 (N. groenlandica of Aurivillius 1887), h. 20. 



Fig. 33. The same, Vega Exp. St. 1042 (N. dausa forma normalis of Aurivillius 1887), h. 43.3. 



Fig. 34. The same, the same locality as Fig. 33, an other sh. (N. pallida of Am-ivillius 1887 ), seen from the spire, h. 32. 



Fig. 35. The same, Treurenburg Bay, Spitzbergen, 3 — 25 fms (1861), h. 25. 



Fig. 36. The same. Kära Sea, N. Semlja Exp. 1875, St. 153 (= Natica flava Gould of Leche 1878), h. 21. 



Fig. 37. The same, Kostin Shar (N. Semlja Exp. 1875, No. 104), h. 17.8. 



Plate 4. 



Figs. 1—40. 



Fig. 1. Lunatia pallida (Broderij) & Sowerby), Väderöarna (Loven), h. 16. X 1.5. 



Fig. 2. The same. Väderöarna (Aurivillius 1895), h. 17.3 and 18. 



Fig. 3. The same, the same sh. as in Fig. 1, seen from the spire; nat. size. 



Fig. 4. The same, Skagerrack (Gunhild Exp. 1879), 350 fms, h. 12.5. 



Fig. 5. The same, Gullmarn (Zool. St. 1886), h. 13. 



Fig. 6. The same, Kullen (Loven), h. 15.5. 



Fig. 7. The same, off Hälsingborg (Gunhild Exp. 1878), h. 14. 



Fig. 8. The same, East Greenland, Mackenzie Bay (Hägg 1905), h. 12.5. 



Fig. 9. Lunatia tenuistriata (Dautzenberg & Fischer), East Greenland the same locaUty as Fig. 8 (L. groenlandica 



of Hägg 1905), h. 12. 



Fig. 10. The same, Thistilfjord, Iceland (Torell), 2 shs, from aperture and from spire (L. groenlandica of Odhner 



1910). 



Fig. 11. The same, Raufarhofn, Iceland (Torell; L. groenlandica of Odhner 1910). 



Fig. 12. The same, Advent Bay, Ice Fiord (Sp. Exp. 1908, St. 45), h. 27. 



Fig. 13. The same, Matotschkin Shar (L. groenlandica of Leche 1878), h. 20. 



Fig. 14. The same, Vega St. 40 (L. pallida of Aurivillius 1887), h. 25. 



Fig. 15. The same, the same sh. as in the preceding Fig., seen from the spire. 



Fig. 16. Lunatia Montagui (Forbes), Bohuslän (Loven) 2 shs, h. 13.7. 



Fig. 17. The same. Väderöarna (v. Goés), h. 11.2. 



Fig. 18. The same. Bergen, Norway (Särs), h. 18. 



Fig. 19. Lunatia catena (Da Costa), North Sea, 51° 5l' N. 1° 39' E. (Eugenie Exp. ). 2 sps, max. h. 27.8. 



Fig. 20. The same, Bohuslän, without definite locality (Lovén's original), h. 23.8. 



Fig. 21. Lunatia nitida (Donovan), 2 shs, Bohuslän (Loven, det. as »N. monilifera»), 2 shs, h. 14.7 and 13.2. 



Fig. 22. Lunatia nana (Möller), Spitzbergen (Torell), h. 6.8, nat. size and X 2.4. 



Fig. 23. The same, Raufarhofn, Iceland (ToreU), h. 4.7, nat. size and X 2.4. 



Fig. 24. The same, Vardö (left) from aperture, h. 4.4, Beeren Island (right) from the spire, h. 4.8. X 2.4. 



Fig. 25. The same, Davis Strait (left), h, 5.7; Greenland (right, MöUer's type), h. 5.2, nat. size and X 2.4. 



Fig. 26. Acrybia flava (Gould), Recherche Bay, Spitzbergen (1898). h. 15.3. 



Fig. 27. The same. Finmark, Ulfsfjord (Goés & Malmgren), h. 8.7. X 2.1. 



Fig. 28. The same, Finmark, Grötsund (Goés &, Malmgren), h. 12.5. 



Fig. 29. Amauropsis islandica (Gmelin), Kings Bay, Spitzbergen, h. 39. 



Fig. 30. The same, Mossel Bay, Spitzbergen, h. 32.2. 



Fig. 31. The same, Vega Exp. St. 45, h. 23.7. 



Fig. 32. The same, Vega Exp. St. 72, h. 22. 



Fig. 33. The same, the same locality as Fig. 31, h. 22.5. 



Fig. 34. The same. Finmark (Loven, = Natica canaliculata Gould), b. 18.2. 



Fig. 35. The same, Greenland, without definite locahty (Möller's orig-inal of »Natica cornea»), h. 9. 



Fig. 36. Trivia arctica (Humphrey), GuUmarn (AuriviUius). One sp. seen from above, from below and from 



spire, 1. 12.9. X 2. 



Fig. 37. The same, Sydkoster, one sp., 1. 11.6. X 2. 



