91 — 



Planorbis corneus, Draparn. 



purpurei, Mùller 

 Var. scalare 



conto rtus, Miiller 



devians, Porro 

 substriatus, Meg. 

 deformis, Larak? 



albus, Mùller e PfeiiFer 

 hispidus, Draparn. e Brard 

 villosus, Poiret 



spirorbis, Muli, non Drap. 



spiralis, Grateloup 



vortex, Miiller 



septemgyratus Ziegler 



compressus, Michaud 

 vortex, Linn. e Drap, non 

 Miiller 



leucostoraa, Michaud 



marginatus, Draparnaud 

 umbilicatus, Miiller 

 carinatus, Studer 

 complanata, Gmel. (Helix) 

 planorbis, Maton (idem) 

 Var. submarginatus, Jan 



carinatus, Mùller 

 dubius, Hartmann 

 acutus, Poiret 

 umbilicatus, Studer 

 complanatus, Turton non Dr. 

 planorbis, Linn. (Helix) 

 planata, Maton (idem) 

 Var. scalare 



acien, Meg. 



Planorbis imbricatus, Drap, non 

 Miiller 

 cristatus, Draparnaud 

 imbricatus, Miill. non Drap. 

 nautileus, Linn. (Turbo) 

 crista, Linn. (Nautilus) 



lenticularis, Sturm e Alten 

 complanatus, Drap, non Turt. 

 fontanus, Turton 

 nitidus, Flemniing non Miill. 



Ancylus, Geoffroy 



capuloides, Jan 



fluviatilis, Drap, e Mùller 

 riparius, Desmaret 

 Var. sol Porro 



lacustris, Mùller 

 oblonga, Turton (Patella) 



Ltmnaeus, Lamk (Limnaeus, De- 

 shayes e Drap. — Stagnicola 

 e Gulnaria, Leach) 



stagnalis, Draparnaud 

 vulgaris, Leach 

 Varietà diverse 



Toniasellii, Menegazzi 



palustris, Draparnaud 

 communis, Leach 

 meridionalis, Parreyss 

 fragilis, Linn. (Helix) 

 striatula, 01. (idem) 

 Var. corvus, Gmelin 



fuscus, Pfeiffer 

 longispira, Andrz. 



elongatus, Draparnaud 

 leucostoma, Lamk. 

 octanfracta, Leach 



