1851. 
1851. 
1852, 
1853. 
1854. 
1855. 
1855. 
1855. 
1856. 
1856, 
1857. 
1857. 
1857. 
1858. 
1850. 
1859. 
1859. 
1859. 
1863. 
1863. 
1867. 
1867. 
1868. 
1868. 
1869. 
1869. 
1869. 
1870. 
1871. 
1872. 
1872. 
1873. 
1873. 
1874. 
1875. 
1877. 
1878. 
1878. 
1878. 
1879. 
1870. 
1882. 
1883. 
1885. 
1885. 
1885. 
Natica helicoides Johnst., Srimpson, Shells of New England, p. 42. 
— — — Forges et Hanrevy, Brit. Moll. III, p. 330, pl. c, fig. 6. 
— — — Purzrppr, Monogr. in Syst. Conch. Cab., 2e édit., p. 93, pl. 13, fig. 13, 14. 
— — — M. Sars, Adr. Havs Fauna in Nyt Mag.f. Naturv. VIII, p. 380. 
— —— — Mac Axprew, Geogr. distr. mar. Moll., p. 6, 8, 11, 45. 
— — — CLark, Brit. mar. test. Moll., p. 467. 
— — — Rezve, Conch. Icon., pl. xxx, fig. 1424, 142b, 1448, 144b, 1458, 145b, 146a, 146b. 
—  cornea Moll., REgve, Conch. Icon., pl. xxx, fig. 1434, 143b. 
—  helicoides Johnst., Mac Anprew, Report N. E. Atl. Moll. in Rep. Brit. Assoc., p. 126, 151. 
= — — Mac Anprew & BarreTT, Moll. obs. betw. Drontheim and the North Cape 
in Ann. and Mag. N. Hist. 2d Ser. XVII, p. 370. 
— — Mac AnDrew & BarreTT, Distr. Moll. Nordland and Finmark in Ann. and Mag. 
N. Hist. 2d Ser. XX, p. 268, 260. 
—  helicoides Johnst., CarPenter, Rep. Moll. W. Coast of N. Amer. in Rep. Brit. Ass., p. 223. 
Lunatia islandica Gmel., Môrcu, Catal. Suenson, p. 16. 
Amauropsis cornea Môll., H. &. A. Apams, Genera of rec. Moll. Il, Appendix, p. 62r, pl. oxxxvrr, 
fig. 5. 
Natica helicoides Johnst., Forges & Gopwin-Ausren, Nat. Hist. of the Eur. Seas, p. 49, 290. 
— — —  DANIELSsEN, Beretn. om en Zool. Reise, p. 37. 
— — —  Jerrreys, Further Gleanings in Brit. Conch., in Ann. and Mag. N. Hist, 3d 
Ser. LIT, p:43. 
— — —  Jerrreys, Addit. gleanings in Brit. Conch., ir Ann. and Mag. N. Hist. 34 
Sér. IV, p. 198. 
—  (Lunatia) helicoides Johnst., TroscHeL, Das Gebiss der Schnecken, p. 180, pl. xv, fig. 6 
(radule). 
—  helicoïdes Johnst., M. Sars, Geol. og Zool. Jagtt:, p. 7. 
—  islandica Gmel., Jerrreys, Brit. Conch. IV, p. 214; V (1860), p. 215, pl. Lxxvunr, fig. t, 1. 
Amauropsis islandica Gmel., PackarD, Glac. Phenom. in Mem. Boston Soc. N. H. I, p. 240. 
Natica (Amauropsis) islandica Gmel., Mürcx, Faunula Moll. Ins. Färôensium, p. 16. 
— — — — Môrcu, Faunula Moll. Islandiae in Vidensk. Meddel., p. 209. 
— — — —  Môrcx, Catal. Moll. Spitzberg in Mém. Soc. Malac. Belg. IV, 
p: 16. 
Amauropsis islandica Gmel., Petit DE LA Saussave, Catal. test. mar., p. 108. 
— cornea Môll., Perir DE LA Saussaye, Catal. test. mar., p. 108. 
— helicoides Johnst., Gouzp & Binney, Invert. of Mass., p. 348, fig. 617. 
Natica (Amauropsis) islandica Gmel., Môrcx, Synopsis Moll. mar. Daniae, p. 38. 
Natica Islandica Gmel., J&FFREYS, Moll. of Europe and E. N. Amer. in Ann. and Mag. N. Hist. qth 
Ser. X, p: 244. 
—  helicoides Johnst., Scaminr, Mammuth Exp. #7 Mem. Acad. St Petersb. vue série, xvur, p. 51. 
Amauropsis islandica Johnst., TryoN, Amer. mar. Conch., p. 6r, pl. 0, fig. 104. 
Natica (Amauropsis) islandica Johnst., Weinraurr, Catal. Meeresconch., p. 14. 
—  islandica Johnst., Mac Inrosx, Moll. of St Andrews in Ann. and Mag. N. Hist. 4th Ser. XIII, 
p. 424. 
— — —  Lecxensy & Marsnazz, North Sea Dredg. in Ann. and Mag. N. Hist. 4th 
Ser. XVI, p. 302. 
— (Amauropsis) islandica Johnst., SRE RNA Moll. from St John’s (Newfoundland), p. 8. 
Amaura helicoides Johnst., KoBELT, Illustr. Conchylienb., p. 82, pl. 30, fig. 16. 
Amauropsis helicoides HS Lecne, Novaja Semlja, p. 50. 
— islandica Gmel., G.-O. Sars, Moll. Reg. Arct. Norv., p. 156, pl. 21, fig. 174 
Natica islandica Gmel., Norman, Moll. of Bergen Fjords i# Journ. of Conch. IT, p. 54. 
Natica (Amauropsis) islandica Gmel., Free, Catal. Spitzberg. Moll. i# Jahrb. d. d. Malac. Ges. VI, 
p. 273. 
—  hglicoides Johnst., Cooke, Macandrew Collect. i# Journ. of Conch. IIT, p. 370. 
— (Amauropsis) canaliculata Gid., Tryon, Struct. and Syst. Conch. II, p. 206, pl. 63, fig. 50. 
—  islandica Gmel., HerzENSTENN, Beitr. zur Kenntn. der Fauna der Murmanküste, p. 675. 
.— Islandica —  DargisaiRe, Mar. Moll. at Oban in Journ. of Conch. IV, p.350. 
— (Amauropsis) helicoides Johnst., AuRIvILLIUS, Üvers. « Vega » Exp., p. 332. 
