Mr. J. G. JefFreys's Notes on Swiss Mollusca. 31 



Limneus minutus, Drap. 



Neighbourhood of Lausanne ; Lac du Brenet ; Vallce de Bagnes ; 

 Valley of the Rhone. Common, and widely dispersed. 



Limneus auricularius, Drap. 



Lac de Bret ; Les Grangettes, and other marshes bordering on 

 the Lake of Geneva. 



The L. acronicus of Studer {L. ampullaceus of Rossmassler) 

 is a well-marked variety or form of this protean species. 



Limneus per eger, Drap. 



Var. Limnetis rimatus, Braun. 

 Gryon; Chessi^res (Charp.). 



Var, Limneus Blauneri, ShuttL 



Schwartzee, near Zmutt (Shuttl.). 



This variety resembles the '^ Gulnaria lacustris" of Leach. 



Var, Limneus vulgaris, Pfeiff. 

 Roche (Charp.). 



Limneus elongatus, L^rap. 

 Canton du Tessin (Stab.). 



Planorhis contortus, Drap. 



Lac du Morat, pr^s de Sallavaux (Charp.) ; — neighbourhood of 

 Lausanne; Lac du Brenet; marsh between Martigny and 

 St. Maurice. Not uncommon. 



Planorhis leucostoma, Mich. .v>*^ >>>^^^>i»V) 



Neighbourhood of Lausanne ; Lac de Bret ; Vufflens. 



This common species is not^ however, the P. spirorbis of Dra- 

 parnaud, to which Studer and Charpentier have referred it. 



Planorhis carinatus, Drap. u^is\ j^U^awosO 



Lakes of Geneva and Brenet. liM .-^iv] 



The variety described by M. Charpentier under the name of 



P. intermedins, is the P. carinatus of my Monograph in the 



' Linnsean Transactions^ ; the typical or extreme form having 



been named by me P. disciformis. 



Planorhis hispidus, Drap. 



Noville ; Valley of the Rhone (Charp.) ; — Les Pierrettes ; Lac du 

 Brenet. Not uncommon. 



