INSCLARUM MADERENSIUM 27 



18. Helix deflorai», Lowe 



Testa umbilicata, orbiciilato-depressa s. discoidea, siipra nitidiiiscula, pal- 

 lide córnea s. subcarnea, cfasciata, subtiis circa umbilicum pallescens, iitrinque 

 subgranulato-slriolata, rugosiuscula, striis confertis, subundiilatim connexivis, 

 interruptis, inaequalibus; spira planato-depressa, apice tabellata: sutura im- 

 pressa; urnbilicus largus, profiindus, spiralis, parietibus lente declivibus, de- 

 pressis; anfractus 6 planati, subprominenti-expressi, 3-4 primitii tabellati, nlti- 

 mus superne obtuso-angulatus, depressus, infra anguliim convexiusculus, antice 

 deflexus; apertura lunato-ovalis; peristoma teiiue, acutum, intus albo-labiatum, 

 marginibus convergentibus, subapproximatis. (Lowe.) 



Coiligere hodie nequivi. 



Diam. maj. 10-11, min. 9-10, alt. 5 mill. 



Helix deflorata, Low. in Proc. Zooi. Soc; et Cat. moll. Mad. 

 » » Pfeif. Mon. helic. 



Habitat rarissima in insula Madera ad convallem Ribeira de S.'" Luzia, ad 

 Arrebentãfí prope N. Senhora do Morde sub lapidibus. 



Obs. H.-rufescenti Pcnn. species próxima; spira vero supra tabellata, cari- 

 nae forma, anfractus ultimi umbilicique conformatione sat distinguitur. 



Obs. H.-bifronti Lowe admodura afQnis; ast spirae et umbilici conformatione, 

 testae striis inaequalibus, interruptis discernitur. 



Seclio sic dieta, quòd testa cúm juvenis striolis capillaribus, íiiamentosis 

 aspersa. 



Species nomine hoc desiguala, quòd specimina hucusque collecta quasi de- 

 florata, nec epidermide vestita. 



Etsi a plurimis malacologis in lota insula Madera postea quaesita, hodie non 

 reperta. 



Frimi invenerunt clariss. Wollastonus et Roussetus. 



19. Helix Ariiiitayeana, Lowe 



Testa perforata, convexo-depressa, rugulosa, tenuissima, fragilis, quasi 

 membranacea, lúcida, olivaceo-cornea v. fusco-virescens, arcte minute hispida, 

 setulis uncinatis, lamellosis, pellucidis, super sírias transversas insidentibus v. 

 sírias furfuraceo-membranaceas transverse decussantibus, interdum obsolete bi- 

 fasciata; spira brevis, conoidea; sutura expressa; perforatio parva, cylindrica; 

 anfractus 4 Y^-S convexiusculi, ultimus angulatus, sub-carinatus, antice vix de- 

 flexus; apertura rotundato-lunaris ; peristoma sublabiatum, marginibus remotis, 



4. 



