49 
Helix advena Wehb et Berthelot. 
Tab. 2. Fig. 26 — 27. 
Testa obtecte perforata, depresso -globosa, tenuis, confertim oblique striata, flava, 
subtus pallidior, apice purpurascente; anfractus 4 vix convexiusculi, ultimus obsolete an- 
gulatus, antice parum descendens; apertura lunato -rotunda; peristoma simplex, leviter 
intus labiatum, marginibus subparallelis , supero expanso, basali ad columellam dilatato, 
reflexo, perforationem tegente. 
Diam. maj. 18, min. 15, ait. 10 millim. 
Helix advena IVebb et Berthelot Synops. p. 324. 
— — d’Orbigny Canar, p. 58. 1. 1. fig. 18 — 20. 
— — Pfeiffer Monogr. I. p. 270. n. 707. 
— — — in Chemn. II. Hei. pars 2. p. 35. n. 418. t. 70. fig. 13 — 14. 
— — Reeve Conch. icon. t. 136. fig. 852. 
Haec species inter maderenses hucusque quidem non enumerata est; inter Helices 
in insula Portu sancto, ab amico Harlung collectas, specimen ^ descriptum tamen reperi. 
. Helix phlebophora Lowe. 
Tab. 13. Fig. 7 — 12. 
Testa imperforata, globoso- depressa, tenuis, irregulariter rugoso - costulata, luteo- 
luivescens, fusco late bifasciata; spira obtuse conoidea; anfractus 5 convexi, ultimus an- 
tice profunde descendens; apertura perobliqua, oblongo -circularis; peristoma simplex, 
tenue, roseo intus labiatum, marginibus approximatis, callo junctis, columellari dilatato, 
intrante. 
Diam. maj. 17, min. 14, ait. 10} millim. 
Rev. Lowe testam juniorem „ umbilicatam, hispidam” significat, in pullis vero an- 
fract. 2} ne vestigium quidem perforationis, nec ullam faciem hispidam observare potui. 
Helix phlebophora Lowe Primit. p. 41. n. 12. t. 5. fig. 6. 
— — Lamarck edit. Deshayes VIII. p. 96. n. 147. 
— nivosa Sowerby in Zool. Jouni. I. 1824. p. 56. t. 3. fig. 3. 
— — Pfeiffer Monogr. I. p. 129. n. 497. 
— ^ — Recwe Conch. icon. t. 136. fig. 845 — 846. 
Var. /i. (Fig. 1 1 — 12) minor, laetius variegata, basi praesertim interrupte 3 — 5 fasciata, 
rudius corrugata et foveolata. 
Diam. maj. 13, min. 11, ait. 8 millim. 
Helix craticulata Lowe Synops. p. 4. n. 6. 
— nivosa var. /1. Pfeiffer Monogr. III. p. 148. n. 785. 
Occurrunt formae intermediae ut in Fig. 9 — 10. Species insuper variat magnitu- 
dine, sculptura, colore. 
7 
