XVI 
INTRODUCTIO. 
donkij fIelicigo7ia , Helicella et Helicostyla genus a ine adoptaluin 
efformant. 
In genere depurato Lamarckiano (1822.) Helicella antea 
(1812.) ab auctore separata iterum injungitur et bene segregatur 
Anostoma, male autem duce Schumacher Carocolla. 
Alii auctores vario modo hoc genus in multa genera vel 
subgenera diviserunt, ex quibus huc referenda mihi videntur: 
Pleurodonia Fischer 1807 — Caprinus, Caracolus , Cepolum , Poly- 
dontes, Jberus, Acaviis, Zoniles Montf. 1810 — Carocolla, Dentcl- 
laria, Otala Schumacher 1817 — Polygy7'a Say 1817 — Mesom- 
phix, Odotropis et Chimotrema Ralinesque 1819 — Arianla, 
Chilotrema, Pomalia. Tachea, Teba, Zurama Leach 1820 — Ileli- 
cogefia, Ca7itareiis, Helicodonta , Helicigona , Hygromia, Helicella, 
Theba et Valkmia (?) Risso 1826 — Sokmw7i Spix 1827 ™ >S/e- 
nopus Guild. 1828 — AriophatUa Desmoulins 1829 — Aplodon, 
Stenoslo77m, Toxosto7na, Mesodoii, Owplialina, Triodopsis, Xolo- 
tre7na, Ralinesque 1831 — Caracalla Broderip 1832 
— 6’o/iwZ/^s, Pyra7nidula, Monacha, Helicella, Latomus, fsogno77io- 
sto7na, lngonoslo77ia, Chilostoina, Goiiyodiscus , Discus, ViJr'ea, 
Aegopis, Oxychilns, Helicopsis Filzinger 1833 — Nanma Gra\ 
1834 — Di^epanostoma Porro 1836 — Acave Krynicki 1836 — 
Cepaea, Coenatoria, Cingidifet^a , Corneola, Lenticula, Xerophila, 
Fndicicola, Trochiscus, Gonosloma, Tragomma, Patula, Polita 
Ileld 1837 ~ Helicopsis, Microcystis, Nanina, xiriophanla , Ste)io- 
pus, Helicella, Meso7n2Mx, Zonites, Eyryomphala, Sagda, Pitys, 
Tmricida, Theba, Leucochroa, Ochthephila , Bi^adybaena, Petasia, 
Daedalochila , 'Jridopsis, Polygyi^a, Ciretnaria, Alacroajclis , Cam~ 
pylaea, Solaropsis, Ibe7'us, Chilotrema, Cai^acollma , Votlex, Chlo- 
ritis, Planispira, Obba, A7npelita, Cai'ucolla, Polydontes, Labyrm- 
thus, Pleurodonia, Deiitellaria , Otala, Helicostyla, Acavus, Heli- 
cogena, Aidania, Gulaxias, Po77iQtia, Polymita , Euryc7\tte7'o, 
Stylodon, Hdicophanta , Geotrochus et Oilhostylus (pars) Reck 
1837 — Helix, Cryplomphahis, Chilostoma, Trigo7iostonm, Carocolla, 
Co7iulus, Helicella, Ddomphalus et Hyalinia Agassiz et Gharpenlier 
1837 — Odontostylus Cray 1840? — Obelus, Oxynota, Eupa- 
rypha, Helicella, Zo7iites, Lo77mstoma, Chilostoma, Actinota, De- 
lomphalus, Aegopis, Oxylopha, Ti'igonosto7na , D7'epa7iosloma, 
Isogno77iostoina , Co7\ulus, Plica7'ia, Calocochlea, Pt^oleusia, Tachea, 
Helicogena, Arianta, Monacha, Tiichia, Teba, Hyalinia, Chromo- 
cochlea, Columplica, Eulota, Gallina, Heierosloma llartm. 1840 — 
44 — ‘ Leiosto77ta, Lucerna, Caracolla, Discodoi7\a, Lucidxda, Lu- 
cer)iella, Polydo7ites, Lyrostoma, Polygyra, Lucidella, Pusiodon, 
Thelido77iuSy Helix, Hemicycla, Zo7iites, Epistyla, He77iit7'ochus, 
Geot7'ockus, Geomit7'a, Helicella Swaius. 1840. (De omuibus hisce 
nominibus conf. Aga ss. Noraencl. et Herrmannsen ind., nec 
non ind. alphabeticus generum et subgenerum in fine vol. II. ' 
