VIll INTRODUCTIO. 



Anuo 1812 (Extrait du Cours de Zool. du Mus. d'liist. nat.) cele- 

 berrimus auctor eandem familiam (primam Trachelipodum) di- 

 visit in: a. qiiadricornia (genera: Helix, Helicella , Helicina, Pupa, 

 BuJimus, Amphibulimus, Achatina) et b. bicornia (genera: Cyclo- 

 stoma, Vertigo, Auricula). — Simili modo auctor 1822 (Hist. nat. 

 (1. anim. s. vert. vol. VI. P. 2. p. 61 . ed. Desh. vol. VIII. p. 10.) 

 iiomiue : Colimaces primam farailiam Trachelipodum phytophago- 

 rum sic divisit: a. tentaculis 4 (genera: Helix, Carocolla, Ano- 

 stoma, Helicina, Pupa, Ciausilia, Bulimus, Achatina, Succinea), 

 et b. tentaculis 2 (genera^^^Auricula, Cyclosloma). — Vitrina a 

 Lamarckio familiae Limaceorum adnumeratur. — Famiha La- 

 marckiana sub nomine: Colimacea eadem lalitudine a Jay (Catal. 

 1839) adoptata, ab aliis sensim depurala et emendata est. 



3) Cuvier 1817 (Regne animal II. p. 404.) inter Pulmonata 

 terrestria genus Helicem sensu lat. habet, cujus subgenera sunt: 

 Helix, Vitrina, Bulimus, Pupa, Scarabus, Chondrus, Succinea, 

 Clausilia et Achaiina. In editione altera (1830.) Carocollam et 

 Anostoma subgeneribus addit et Scarabum eliminat, qua emen- 

 dalione genus familiae noslrae salis bene respondet. 



4)Ferussac 1819 ( in Prodr. p. 18.) et 1821 (Tabl. sysl. 

 p. XXXI.) subordinem Pulmonatorum non operculatorum geophi- 

 lorum in duas familias divisit, quarum altera: Cochleae exacte 

 omnia genera a me in familia Heliccoruin adoptala complectilur. 

 Claro autem auctori genera sunt: a. tetracera: Ilelicarion, Heli- 

 colimax, Helix (subgenera: Helicnphanta, Cochlohydra , Heli- 

 cogena, Helicodonla, Helieignna, Ilelicella , Helicostyla, Cochlo- 

 styla, Cochlitoma, Cochlicopa, Cochiicella, Cochlogena, Cochlo-. 

 donta, Cochlodina) et b. dicera: Vertigo, Partula. — Genus 

 Polyphemus Monlf. in tab. synopt. p. 19 adoptatum serius (p. 50. 

 et tabl. syst. p. XXXIl. ) Helici iterutn injungitur. 



5) Schweigger 1820 (Naturgesch. p. 741.) in Coelopnois 

 lerrestribus geuus Ifelicem adoptat, Cuvieriano simile, cujus sub- 

 genera sunt: Succinea, Scarabaea, Chondrus, Pupa, Bulimus, 

 Ilelix, Vitrina. 



6) Studer 1820 (Syst. Verz. p. 11.) familiam una cum 

 Limaceis in genere Glischri comprehendit, cujus subgenera haec 

 sunt: Limax, Ilyalina, Tapada, Helix, Bulinus, Pupa, Torquilla, 

 Clausilia. 



7) W. Hartmann 1821 (Neue Alpina L p. 200.) Helicea 

 noslra et Limacea comprchendit in Gastropodibus Adelobranchiis 

 terrestribus et amphibiis. Genera ei sunt: (^lausilia, Chondrus, 

 Pupa, Bulinus, Helix , Limacina , Limax, Limacia ct Amphibina. 

 — Eodem anno (in Slurm's Fauna Deutschl. Abth. VI. II. 5. p. 54.) 

 generibus addit Daudebardiam. 



8)Blainville 1824 (Dict. d. sc. nat. tom. 32. p. 247.) et 

 l82o(Man. dc Malac. p. 4o4.) tertiam familiam Pulmobranchia- 



