INSULARUM MADERENSIUM 79 



bosis, pede angusto, in caiidam densam, carinatam desinente, pallio fuscesceii- 

 ti-rubello. 



Diam. maj. 1 '/-2, min. 1, alt. "Vs mill. 



Helix pygmaea, Drap. 



» » Morel. Moll. du Port. 



» » Pfeif. Mon. helic. 



Zonites pygmaeus, Gray Man. 



Habitat frequens in tota fere Europa, Suécia, Britannia, Gallia, Lusitânia, 

 etc. sub lapidibus; in insula Madera raiissima, foliis emortuis super terram de- 

 cunibentibus adhaerens in umbrosis, saxosis convallis Ribeira de Vasco Gil dictae; 

 fossilis rara ad Caniçal. 



Species sic dieta quòd testa minutíssima, certe pygmaea. 



Primúm in insula Madera a clariss. Rev.'* Watsono anno I80C detecta. 



74. Heiix pusilla, Lowe 



Testa umbiiicata, turbinato s. rotumlato-depressa, tenuis, rufescens, plicis 

 s. costulis remotis, annularibus, aequalibus, membranaceis supra instructa; spira 

 convexiuscula, vix elata; sutura impressa; umbilicus patulus, spiralis, pervius ; 

 anfractus 3V2-4 rotundati, ultimus non descendens, basi laevigatus; apertura 

 sublunato-circularis; peristoma simplex, acutum, ténue.— Animal limidum, ra- 

 pide intra testam sese recondens, corpore albido-plumbeo, cylindraceo, iatera- 

 liter infra maculis caeruieis, oblongis notato, fronte alliido-subpiumbeo, rostro 

 quasi proboscideo, superioribus tentaculis gracilibus, plumbeis, ápice bulbosis, in- 

 ferioribus brevissimis, íiliformibus, plumbeis, pede albido-plumbeo, postice acuto, 

 antice obtuso, pallio albido-cinereo, orifício respiratório minimo, fere inconspicuo. 



Diam. maj. 2, min. 1 '/2, alt. 1 mill. 



Helix pusilla, Low. Prim. (fig. bona); et Cat. moll. Mad. 

 » » Pfeif. Mon. helic. 



» » Âlb. Mal. Mad. (fíg. var. y- bona) 



Habitat frequens sub lapidibiis in insulae Maderae viço SM Anna juxia mu- 

 ros vetustos, sul) Castanearum cortice emortuo ad jV. Senhora dn Mnittc propc 

 Funchal, super terram in Praia Formosa, raríssima in insula Deserta Majore 

 ad herbarum radices lalitans. 



Variet. adsunt =: annnlata, testa subdiscoidea, spira depressa, distincte pli- 

 cato-costellata, fusco-rufescente, in lapidum foraminibus recôndita, rai ior. 



