43 
Helix calva Pfeiffer in Chemn. II. Hei. 1. 129. fig. 37 — 39. 
— — Reeve Conch. icon. t. 141. fig. 900. 
Habitat in Maderae convallibus umbrosis. Rara. 
46. Helix actiiiopliora Lowe. 
y Tab. 11 . Fig. 6 — 8. 
Testa umbilicata, turbinato -depressa, tenuis, diaphana, subtiliter striata, sericino- 
fusca, superne striis elevatis transversis, antrorsum vergentibus, ex squamulis minutissimis 
sertis, ornata, peripheria squamulis triangularibus, acutis, radiantibus cincta, et basi setulis 
uncinatis conspersa; spira breviter conoidea, acutiuscuJa; anfractus 5 subplani, ultimus 
medio acute carinatus, antice vix descendens, basi convexus; umbilicus parvus, pervius; 
apertura obliqua, rotundato -ovata; peristoma tenue, intus leviter labiatum, marginibus di- 
stantibus, supero recto, basali expansiusculo, columellari dilatato, umbilicum tangente. 
Diam. maj. 9^, min. 8^, ait. 5 millim 
Helix actinophora Lowe Priinit. p. 45. n. 20. t. 5. fig. 14. 
— — Pfeiffer Monogr. III. p. 123. n. 606. 
— — Reeve Conch. icon. 1. 140. fig. 886. 
Habitat in Maderae locis editioribus, humidis, umbrosis, v. gr. ad locum „Ice house” 
ab Anglis vocatum. Rarissima. 
Sectio Gonostomii. *) 
Testa umbilicata, arctispira, depresso -orbiculata vel discoidea; anfractus 5 — 7 lente 
accrescentes; apertura irregularis, saepe dentata; peristoma labiatum, subincrassatum, re- 
flexum, plerumque sinuatum, saepe extus scrobiculatum. 
47. Helix lenticula Femssac. 
/ Tab. 11 . Fig. 9 — 12 . 
Testa umbilicata, lenticularis, carinata, subtilissime costulato- striata, fusco-cornea, 
opaca; anfractus 3 convexiusculi. ultimus antice vix descendens; apertura lunaris; peri- 
sloma flexuosum, superne simplex, rectum, marginibus callo tenui junctis, columellari re- 
flexiusculo, subtiliter limbato. 
’ / 
Diam. maj. 8^, min. 7^, ait. 3 millim. 
Helix lenticula Femssac Tabi. syst. Prodrome n. 154. 
— — Deshayes in Fer. hist. I. p. 361. n. 427. t. 66. fig. 1. 
6 * 
Albei’s Heliceen p. 94. 
