( 46 )/ (Helix, Fer.) 
5. Heurcostyia. Fer. 
Elliptical or trochiform. Columella solid. 
a Aplostome. Columella straight; peristoma simple PI. 8, fig. 6. 
4 Lamellate. Columella straight, round; peristoma simple; an internal 
plate on the last whorl. P1. 8, fig. 9, 10. - 
c Canaliculate. Columella twisted, as if truncated at the base, or with an 
internal spiral rib forming a gutter, under the form of a tooth or cal- 
losity. Pl. 13, fig. 1. 2 
d Marginata. Columella flattened, without teeth or plates; peristoma 
reflected. Pl, 8, fig. 11. 
6. Hevicopuanta. Fer. 
Spire depressed ;_ volu- Perforated or umbili- 
tions rapidly increasing cate. 
horizontally ; mouth very 
large and oblique ; only 
three to three and a half 
whorls; the last enormous. 
a Vitrinoides. Peristoma simple. Pl. 7, fig. 2. 
6 Vesicule. Peristoma thickened and sub-reflected. Pl. 7, fig. 3, 4. 
B. Longitudinally volute. 
7. Cocutonypra. Fer. 
AmpninuLima. Lam. Suc- 
cINEA. Drap. 
Elongated, oval ; volu- Peristoma simple. 
tions rapidly increasing 
vertically ; spire short, 
with 2 to 4 whorls, the 
last forming almost the 
whole of the shell; mouth 
very large. Pl. 6, fig. 5s 
Pl. 7, fig. 5, 6 
8. Cocniostyia. Fer. 
Elongated or ventricose ; Columella solid, not 
spire elevated : whorls in- truncated at the base. 
creasing rapidly. 
a Lomastome. Peristoma reflected. Pl. 8, fig. 27. 
b Aplostome. (1) Peristoma simple. 
9. Cocutirroma. Fer. 
AcnHatTinaA. Lam. 
Conical or very ventri- Columella solid, flat, 
cose , solid, little transpa- andiruncatedat the base. 
rent. 
a re Base conical; mouth short; outer lip advanced. Pl. 8, 
1g. 40. 
b ae, ey Ventrical; mouth very large; outer lip vertical. Pl. 
Bees 3, 
_ (4) The Sultana (Helix Gallina Sultana, Chem.) was sold, at the sale of the 
Count de Latour d’Auvergne, for 560 franes, 
