— 5 - 



Hab. Sub saxis et ligno putiido , consort. Puparuiii , prope isaia- 



chico, Teneriffa, satis copiose. 

 Obs. Species distinctissima. 



Helix circiiiusessa Shuttl. 



Testa mediocriter sed perspective umbilicata, depresso-globosa, ru- 

 fescenti-cornea , concolor, subtiliter plicato — striata, lineis spira- 

 libus epidermide fiinbriatis squamulosa^ spira convexaj anfr. 472? 

 convexi, sensim accrescentesj sutura profunda^ apertura lunari- 

 ovalis, übliqua; perist. simplex, acutum, marginibus conniventibus. 



Diam. maj. 9, min. 7; Alt. 5 mill. 

 Hab. Sub saxis et foliis emortuis, Teneriffa et Palma. 



Obs. Prope H. ruderatam forsan collocanda, sed sculptura ab 

 Omnibus distincta, H. circumlineatam Küst reminiscens. 



Helix 8cutula Shuttl. 



Testa concave umbilicata, depressissima, arctispira, cornco ru- 

 fescens, indistincte rufo-maculata, subtiliter oblique costulata^ spira 

 subplana^ anfr. 9, planulati , omnes basi conspicui, ultimus ad peri- 

 pheriam et ad umbilicum latissimum obsolete angulatus, antlce sen- 

 sim descendens3 apertura subquadrata; perist. rectum, simplex, 

 acutum. 



Diam. maj. TVz? "^i"- ^Vaj ^^t. 2^2 mill. 

 Hab. In mont. sub ligno putr., Teneriffa, semel legit Blauner. 

 Obs. Cohortis H. rotundatse evolutio summa. 



Helix eiigoiiata Shuttl. 



Testa latissime perspective umhilicata, depressa, arctispira, brunneo- 

 rufescens, costulataj spira convexa^ anfr. 6V2 convexiusculi, ultimus 

 ad peripheriam carinatus, circa umbilicum conicum acute angulatus^ 

 apertura non descendens, subquadrata^ perist. rectum, simplex, acutum. 



Var. Pallidior, corneo-maculata^ anfr. ultimo ad umbilicum 

 obtuse angulato. 

 Hab. Sub saxis et ligno prope Garachico , Teneriffa. 

 Obs. H. solaris) Mke affinis , sculptura validiori et anfr. con- 



vcxioribus distincta. 



Helix retexta Shuttl. 



Testa perspective umbilicata, depressa , arctispira, rufescens, pallide 

 maculata, superne subtiliter costulata 5 spira convexaj anfr. 6, con- 

 vexiusculi, ultimus angulatus, subtus laevis, nitidus; sutura albido- 

 marginata; apertura obliqua, subcircularis, non descendens; perist. 

 rectum, simplex, acutum. 



Diam. maj. 7, min. 6; Alt. 2V2 miU. 



