57 



— A^. similis fasciatus, Lister Hist. Conch. lab. 607. fig. 40. 



— N. orcadensis fusca, fascia unica fiavescenfe, Peliv. 

 Gazoph. nat. dec. 1. tab. 34. fig. 5. — Cricostoma fascia- 

 ium, a, Klein Meth. ostr. p. 12. tab. 1. fig. 25. — Geve 

 Monatl. ßelust. Taf. 28. fig. 323. 



d. picta'f testet semiglobosa, ovata^ convexa, fusco ru- 

 fove oblique lineata, fulminata, vel tessellata; spira 

 hrevissima, obtusissima. Long, 6, alt. 3, 5, lat. 4, 5 lin. 

 Nerita reticulatus, Lister Anim. angl. p. 105. tab. 3. 

 fig. 13. — N. subrufus, lineis undatis rarioribus per obli- 

 quuni depictiiSy Lister Hist. Conch. tab. 607. fig. 41. — N. 

 subrufus reticulatus clavicula minus compressa, Lister 1. c. 

 tab. 607. fig. 42. — N. orcadensis flava, striis capillaceis, 

 Petiv. Gazoph. nat. dec. 1. lab. 3i. fig. 6. — Geve Monatl. 

 Belust. Taf. 28. fig. 326. — Nerita litoraUs, Linn. Faun, 

 suec. ed. 2. p. 533. nr. 2195. — it. Linn. Syst. nat. ed. 12. 

 p. 1253. nr. 724. — it. Müller Zool. dan. prodr. p. 244. 

 nr. 2953. — it. Costa 1. c. tab. 3. fig. 16 et lab. 4. ü^. 2.— 

 Cerasum silvestre. Turbo obtusatus Linn., Chemn. Conch. 

 Gab. 5. p. 234. lab. 185. fig. 1854. lit. e. f. — Cocidea lu- 

 naris litorea Neritis simillima. Turbo neritoides Linn., 

 Chemn. 1. c. p. 234. tab. 185. fig 1854. nr. 8. — Turbo 

 obtusatus, Schrot. Einl. in d. Conch. 2. 1784. p. 3 (descript.). 



— T. neritoides, Lara. Hist. nat. 7. p. 48. nr. 27 (ex parte). 



— it. Desh. Lam. Hist. nat. 9. p. 214. nr. 27 (ex parte). 



luvenilis testa: apertura lateraliter dilatata, labro 

 tenui. 



an Cochlea Nerita lacustris dicta, Linn. Faun. suec. 

 1746. p. 377. nr. 1319. — an Nerita litoralis, ß, Linn. Faun, 

 suec. ed. 2. 1761. p. 533. nr. 2195. — Neritae litoralis var., 

 Mat. et Rack. 1. c. p. 227. pl. 5. fig. 15. — Turbo retusuSf 

 Lara. Hist. nat. 7. p. 48. nr. 28. — Litorina ioides, m. olim 

 (1836). in lit. — Litorina, Desh. Lam. Hist. nat. 9. p. 215. 

 nr. 28 (excl. syn. Turt). 



An der Küste von Helgoland kommt diese Schnecke 

 ziemlich häufig, bei Norderiiei nicht hiiufig vor; d über- 

 haupt am häufigsten, a weniger häufig (in meiner Samm- 



