INSULARUM MaDERENSIUM 73 



Sectio Plebecula (Lowe, Albers) 



Testa iimbiiicata v. obtecte peiforatn, subglobosa, slriala, granulala; anfia- 

 ctiis u-5 '/2 convexi, ultimiis antice vix deflexus; apertura rolundala; peristoma 

 sirnplex, iiitus (lilíuso-callosum, marginibus approximatis, columellari reflexo, 

 expanso. 



67. Helix Itowdithiana, Fèrussac 



Testa oblecte perlbrala, globosa, striala, rugulosa, confertim granulata, 

 crassa, quasi calcarea; spira convexa; sutura distincla; anfractus 572-6 coii- 

 vexi, uUiiiuis globosus, inflatus, antice deflexus; apertura obliqua, rotundato- 

 lunaris; peristoma intus railosum, marginibus callo junctis, dextro arcuato, ba- 

 sali recto, coiumellari dilalato. — •Animai rion licuit examinare, qiiòd liodie tantum 

 fossilis testa nec recens. 



Diam. maj. 20-22, miii. 17-18, all. 19 miii. 



Helix Bowdichiana, Fèr. [list. 

 » Vargariana, Pleif. in Proced. Zool. Soc. 

 » [luiirtulala, var. / Pfeif. Mon. helic. 

 » Bowdiciiiana, Alii. Mal. Mad. (ilg. óptima) 

 » » Low. Cat. moll. Mad. 



Fossilis reperitur in insula Portosancto frequens ad Zimbral cfArêa. 



Var. X semifossilis, peristomatu minus incrassato, lesta lenuiore, laevigata, 

 pellucida, hand foveolata, ad Zimbral d'Aréa rarior. 



Obs. H.-punclulatae Sovv. valde proximi; testa vero majore, globosiore, 

 magis compacta, margine columellari crasso-calloso, scuiptura rudiore, anfra- 

 ctibus numeiosioribus diíTert. 



Obs. Qiiamquam clariss. Wollastonus (in litt.), Pfeifferus, Rev.'' Loweus me- 

 ram varietatem ll.-puiiclulatae Lowe exisliment, niilii tamen species distincta vi- 

 detur ob diversum anfractiium nunierum, peiástomalis marginem columellarem 

 valde incrassatum, testam ampliorem. 



Scclioriis denoniinalio quoad elliijmolngiam ignota. 



Species sic dieta, (|uòd claiiss. Bowdicho dicala. 



Claiiss. Oowdichus invenit primus? 



68. Hclix punctulata, Sowerby 



Testa obtpcte umbilicata, subglobosa, ecarinata, coffaeacea s. flavo-fusca, 

 toncentrice slriata s. lineala, selulis rigidis, fugacissimis aspersa, scabro-granu- 



MIOl. DAAC.^.D. — 1.'' CL.\.S5K. T. IV, 1'. I. 10 



