— 140 — 



Hab. Sub follis cmortius, Palma. 



Obs. Priori valde affinis, anfr. ultimo laviusculo, iiitido, absque 



anguli circa umbilicum vestigio, et sutura marginata, distincta. 



H. Guerini Lowe, ex Madera, etiam affinis, sed sculptura, 



latidudine et forsan numero anfr. difFert. 



Helix textilis Shattl. 



Testa mediocriter sed perspective urabilicata, globoso-depressa, 

 suborbiculata, corneo-flavida, indistincte rufescenti-maculata, costu- 

 lata; anfr. 7, convexi, lente accrescentesj apertura subverticalis, 

 lunaris; perist. rectum, simplex, marginibus conniventibus. 



Diara. maj. 8, min. 7, Alt. 4 mill. 

 Hab. Sub ligno putrido, Palma, rariss. 

 Obs. H. flavidae Ziegl. affinis. 



Ilelix plaeida Shuttl. 



Testa aperte sed mediocriter umbilicata, depresso-turbinata, tenuis, 

 subtilissime striata, diaphana, sericlna, pallide oornea; anfr. 4, 

 convexi, ultimus antice vix descendens^ apertura rotundataj perist. 

 simplex, rectum, acutum. 



Diam. vix 2} alt. circa 1 mill. 

 Hab. Ad truncos arb. prope Guimar, Teneriffa. 

 Obs. Prope H. rupestrem collocanda, a qua diflert dimensionibus, 



colore, et anfr. paucioribus. 



Helix servilis Shuttl. 



Testa mediocriter umbilicata, globoso-dcpressa, lamellis tenuissimis 

 eximie costulata, corneo-rufescensj anfr. 4, convexiusculi, ultimus 

 non descendens ; apertura rotundataj perist. rectum, simplex, acutum. 



Diam. vix ultra V/2', alt. circa 3/^ mill. 

 Hab. Ad saxa prope Garachico, Teneriffa, et in Palma. 

 Obs. H. tenuicostae Shuttl. affinis , sed minor, costis crebriori- 



bus , umbilicoque angustiori distincta. 



Helix Poiiipylia Shuttl. 



Testa perforata, supra depressa, subtus convexa, suborbicularis , 

 arctispira, corneo-rufescens , subtus strigis maculisque albidis 

 tenuissimis fulguratim-radiata , superne costulata^ anfr. 8, lentis- 

 sime accrescentes, ultimus circa perforationem subexcavatusj aper- 

 tura subverticalis, anguste lunaris^ perist. subflexuosum , acutum, 

 simplex , marginibus callo tenui junctis. 



Diam. maj. 5, min. 472^ Alt. 3 mill. 

 Hab. Sub foliis emortuis, Palma, rariss. 

 Obs. Species distinctissima, cum H. Calatlius Lowe ined. et H. 



bifronti Lowe ex Madera , cohortem novam efficiens. 



