PARMACELLA. 121 



membrauacea, Bens, resiliens, Beck. 



Natalensis, Krauss. Ruivensis, Couth. 



niticla, Gould. sigaretina, Recluz. 



pellucida, Mull. Soweibyana, Pfeiff. 



Poeppigii, Mice. Strangei; Pfeiff. 



politissima, Beck. tenella, Gould. 



Pyrenaiea, Ferns. Verrauxii, Pfeiff. 



Genus HELICOPHANTA, Ferussac. 



Eye-peduncles short; tentacles rudimentary; pulmonary 

 orifice on the right border of the mantle, a little posterior; 

 body elongated, greatly developed. 



Shell on the hind part of the body, perforate, homy, 

 depressed, paucispiral, horizontally and rapidly involute, 

 last whorl very large; aperture oblique, very wide. 



Syn. Daudebardia, Hartm. 



E.v. H. brevipes, Draparnaud, pi. 72, fig. 3. Shell, 

 H. rufa, Draparnaud, fig. 3, a. 



Helicophanta, which consists of but three species, comes 

 from Germany, Switzerland, Hungary, and the north of 

 Italy. It inhabits hilly regions, in moist places, hiding 

 under stones and moss. 



Species of Helicophanta. 



brevipes. Drop. rufa, Drop. 



Langi, Pfeiff. 



Genus PARMACELLA, Cuvier. 



Mantle shield-like, on the bind part of the body; orifice 

 Of respiratory sac at the right posterior margin. Back with 

 a dermal protuberance between the book and the margin 



