INTRODUCTIO. IX 



loruin Limacinea habet. Genera sunt: a. Succinea, Bulimus, 

 Achalina, Clausilia, Puppa, Tomogerus, Helix — b. HelicoHmax, 

 Teslacella, Parmacella, Limacella, Limax , Onchidium. 



9) Risso 1826 (Hist. IV. p. 58.) farailiam Helicidarum in 

 Adelobranchiis constituit, cujus genera sunt sequentia: Succinea, 

 Helicogena, Helix, Cantareus, Helicodonta, Helicigona, Hygromia, 

 Helicella, Theba , Cochlicella, Bulimulus, Rumina, Cochlicopa, 

 Ferrusacia, Acicula, Vediantius, Orbitina, Crenea, Saraphia, Clau- 

 silia, Pegea, Jaminia. 



10) C. Pfeiffer 1828 (Naturg. IIL p. 3 et 55.) in universuin 

 methodum Ferussacianam adoptat. Male autem praeter Helico- 

 phantam, Vitrinam, Succineam, Hehcem et Vertiginem Cochlea- 

 rum generibus etiam adnumerat Carychium et Cyclostoma. 



11) Menke 1828 (Synops. p. 8.) familiam Helicearum (se- 

 cundam Geophiiarum) divisitin: a. letraceras (genera: Helicarion, 

 Vitrina, Daudebardia, Succinea, Helix, Carocolla, Anostoma, Bu- 

 limus, Achatina, Clausilia, Pupa et fe. rf?ceras ( genera : Vertigo, 

 Partula). — In secunda editione 1830 eadem distributio servata 

 est mutatis nominibus in: Geophila et Helicea. 



12)Fleming 1828 (Brit. anim. p. 255.) Helicidas priorein 

 subfamiliam Cochleadarum inoperculatorum habet. Genera : Ca- 

 rocoUa, Helix, Bulimus, Achatina, Succinea. Vitrina. 



13) Rang 1829 (Manuel p. 156.) familiam Ferussacianam 

 adoptat {les Limagons). Genera ei sunt: Vitrina, Helix, Vertigo et 

 Partula. 



U) Deshayes 1830 (Encycl. meth. IL p. 552. tabl.) in se- 

 cunda familia Pulmobranchiatorum genera admitlit: Vitrinam, 

 Ilelicem, Ano^toma, Bulimum , Succineam et Pupam. 



15) Cristofori et Jan 1832 (Catal. p. 1.) genera Heliceo- 

 rutn in familia secunda et terlia Pulmonatorum terrestrium enu- 

 merant. Familia secunda: Helicoidea (genera: Helicophanta , Vi- 

 trina, Helix); familia tertia : Coc/i/o^c/ea (genera: Achatina , Poly- 

 phemus, Columna, Bulimus, Pupa, Vertigo, Chondrus, Clausilia, 

 Succinea). 



16) Wiegmann 1832 (Handb. d. Zool. p. 523.) in secunda 

 familia Pulmonatorum — Helicinis — genera habet: Vitrinam, 

 Succineam, Helicem, Bulimum, Pupam, Clausiliam, Vertiginem. 



17) Fitzinger 1833 (Syst. Verz. p. 92.) Helicoidea et 

 Cochloidea Crist. et Jan nomine Helicoideorum comprehendit. 

 Genera in Austria obvia: Hehx, Conulus, Pyramidula, Monacha^ 

 Helicella, Latomus, Isognomostoma, Trigonostoma, Chilostoma, 

 Gonyodiscus, Discus, Vitrea, Aegopis, Oxychilus, Helicopsis, 

 Clausilia, Fusulus, Styloides, Bulimus, Torquilla, Cylindrus, 

 Pupa. 



18) Beck 1837 (Ind. moll. p. 1.) Ileliceorum genera in fa- 

 milia Cochleadeorum coraprehendit et in quatuor tribus dividit, 



