INTRODUCTIO. 
IX 
lorum Limacinea habet. Genera sunt: a. Succinea, Bulimus, 
Achatina, Clausilia, Puppa, Tomogerus, Helix — b. Helicolimax, 
Teslacella, Paruiaceila, Limacella, Limax, Onchidium. 
9) Risso 1826 (Ilist. IV. p. 58.) familiam Helicidanim in 
Adelobranchiis constituit, cujus genera sunt sequentia: Succinea, 
Ilelicogena, Helix, Cantareus, Helicodonla, Helicigoua, Hygromia, 
HeliceUa, Theba , Cochlicella, Bulimulus, Rumina, Gochlicopa, 
Ferrusacia, Acicula, Yedianlius, Orbitina, Grenea, Saraphia, Clau- 
silia, Pegea, Jaminia. 
10) C. Pfeiffer 1828 (Naturg. IIL p. 3 et 55.) in universum 
methodum Ferussacianam adoptat. Male autem praeter Helico- 
phantam, Yilrinam, Succineam, Helicem et Vertiginem CocMea- 
rum generibus etiam adnumerat Carychium et Cyclostoma. 
11) Menke 1828 (Synops. p. 8.) familiam Ilelicearim (se- 
cundam Geophilarum) divisit in: a. letraceras (genera: Helicarion, 
Yilrina, Daudebardia, Succinea, Helix, Carocolla, Anostoma, Bu- 
iimus, Achatina, Clausilia, Pupa et 6. dfceras (genera: Vertigo, 
Partula). — In secunda editione 1830 eadem distributio servata 
est mutatis nominibus in: Geophila et Ifelicea, 
12) Fleming 1828 (Bril. anim. p. 255.) Helicidas priorem 
dubfamiliara Cochleadarum iuoperculatorum habet. Genera : Ca- 
rocolla, Helix, Bulimus, Achatina, Succinea, Vitrina. 
13) Rang 1829 (Manuel p. 156.) familiam Ferussacianam 
adoptat {les Limago7is), Genera ei sunt: Vitrina, Helix, Vertigo et 
Partula. 
14) Deshayes 1830 (Encycl. ineth. II. p. 552. labi.) in se- 
cunda familia Pulinobranchialormn genera admittit: A^itrinani, 
Helicem, Anostoma, Bulimum , Succineam ct Pupam. 
15) Cristofori et Jan 1832 (Calai, p. 1.) genera Ilelicco- 
ruin in fatnilia secunda et tertia Pulmonatorum terrestrium enu- 
merant. Familia secunda : Ilelicoidea (^^enera: Helicophanta, Vi- 
irina, Helix); familia tertia: Cochloidea {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: Vilrinam, 
Succineam, Helicem, Bulimum, Pupam, Clausiliam, Vertiginem. 
17) Fitzinger 1833 (Syst. Verz, p. 92.) Ilelicoidea et 
Cochloidca Crist. et Jan nomino Helicoideorum comprehendit. 
Genera in Austria obvia; Helix, Conulus, Pyramidula, Monacha, 
Ilelicella, Latomus, Isognomostoma, Trigonostoina, Chilostoma, 
(jonyodiscus, Discus, Vitrea, Aegopis, Oxychilus, Ilelicopsis, 
Clausilia, Fusulus, Styloides, Bulimus, Torquilla, Cylindrus, 
Pupa. 
18i Beck 1837 (Ind. moli. p. I.) Ileliceorum genera in fa- 
milia Cochleadeonim comprehendit et in quatuor tribus dividit, 
