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Genre Eumargarita, P. Fischer 1885 
Eumargarita helicina, Phipps 
Turbo helicina Purpps, Voyage towards the North Pole, Append., p. 198. 
Trochus helicinus Fapricrus (non Gm.) Fauna Groenl., p. 303. 
Turbo Neritoïdeus Gmeui, Syst. Nat. Ed. XIII, p. 3577. 
Helix margarita Monracu, Test. Brit. Suppl., p. 143. 
— — Mtg., Lasxey, Account of N. Br. Test. in Mem. Wern. N. H. Soc. p.408, pl.8, fig. 5. 
Trochus neritoideus Dizcwyn, Descr. Cat. II, p. 780. 
Turbo margarita Turtow, Conch. Dict., p. 220. 
Margarita arctica Lracn in Ross’ Voy. of Discovery Append. 11, p. 67. 
Turbo margariia Lask. Lowe, Descr. of Brit. Chitons and other Shells ir Zool. Journ. Il, p. 107, 
pl. V, fig. 10, 17, 1rb. 
— — FLEMING, Brit. Anim., p. 2009. 
—  inflatus Torren, Descr. new Sh. N. England in Amer. J. of Sc. a. Arts XXVI, p. 368, fig. 15. 
Margarita arctica Sowersy, Malac. and Conch. Mag. I, p. 25. s 
— vulgaris Leach, Sowersy, Malac. and Conch. Mag. I,, p. 24. 
— arctica Sowergy, Conch. Illustr., fig. 6. 
— vulgaris Sower8y, Conch. Illustr., Margarita fig. 13. 
— arctica Leach, Gourp, Inv. of Mass. p. 255, fig. 173 (teste ipso). 
Trochus margarita Jounsron, Catal. Gaster. Moll. in Proc. Berwick Club I, p. 265. 
Margarita helicina S. Woon, Cat. Shells from the Crag 57 Ann. & Mag. N. H. 1st Ser. IX, p. 530. 
— — Fabr., MôLrer, Ind. Moll. Groenl., p. 8. 
— arctica De Kay, Zool. of N. York, p. 108, pl. 6, fig. 107. 
—— —  Leach, Mrcenezs, Catal. Shells of Maine, p. 33. 
Turbo margarita Brown, Ill. Conch. Gr. Brit. & Trel. 2e édit., p. 17, pl. X, fig. 28, 20. 
Phorcus — Flem., Maccrirrivray, Moll. Anim. of Scotl.,p. 134. 
Turbo —  Lowe, Taorps, Brit. mar. Conch., p. 160. 
Margarita communis Taomeson, Rep. Fauna ofIreland in Rep. Brit. Assoc. p. 256, (Turbo margarita 
Mtg). 
— helicina Fabr., Aurivirrius, Hafsevert. Nordlig. Tromsô p. 20, 30. 
Trochus helicinus Fabr., Parxprr, Die Kreiselschnecken in Syst. Conch.' Cab. 2e édit., p. 250, pl. 37, 
3 fig. 10. 
Margarita margarita Gray, List of genera of rec. Moll. 37 P. Z.S. L. p. 146. 
Margarites diaphana Leacn, Classification of Br. Moll. #7 Ann. & Mag. N. H. 1st Ser, XX, p. 271. 
Margarita helicina Fabr., Arver, Catal. North. & Durh., p. 60. 
—— arctica Mipnenporrr, Neue Conch. in Bull. Acad. St-Pétersb. VII, p. 246. 
— —  Mioenporrr, Malac. Ross. IT, p. 69 (var. major). 
Trochus helicinus Forses & Hanzey, Brit. Moll. IL, p. 531, pl. LXVIIL, £. 4, 5; LXXIV f. 10 ; pl. GG 
f. 4 (animal). 
— — Forges, Infra-litt. distr. mar. Inv. in Rep. Brit. Ass., p. 223. 
Margarita helicina Fabr., Srrmrsow, Shells of New England, p. 32. 
— — —  M.Sars, Beretn. Zool. Reise in Nyt Mag. f. Naturv. vi, p. 182. 
— arctica Miopenporrr, Reise in Ostsibirien p. 203, pl. XVII, fig. 13-16. 
Margarites diaphana Leacn, Synopsis Moll. Gr. Brit., p. 197. 
Margarita helicinus Fabr., Môrcn, Catal. Yoldi I, p. 152. 
— —  —  AsBrôrnsen, Bidr. Christianiafj. Litoralf. in Nyt Mag.f. Naturv. VII, p. 317. 
— helicina —  Srimpson, Invert. of Gr. Manan, p. 23. à 
— — — M. Sars, Adr. Havs Fauna in Nyt Mag. f. Naturv. VIII, p. 387. 
Trochus (Margarita) helicinus M’Axnrew, Geogr. Distr. test. Moll., p. 6, 7, 11,45. 
—  helicinus Fabr., CLark, Brit. mar. test. Moll., p. 317. 
Margarita helicina M'Axprew, Rep. N. E. Atl. Moll. in Rep. Br. Ass., p. 119, 147. 
Fabr., Mac Axprew & Barrerr, Moll. obs. betw. Drontheim and the North Cape 
in Ann. & Mag. N. H. 2d Ser. XVII, p. 380. 
— — Gray, Guide to the Syst. Distr. of Moll., p. 153. 
