SYSTEMATIC INDEX. 
IX 
Genus 32. 
Lymn.®a. 
Section 2. — 
Animals with four ten- 
SiGARETUs Lamarck. 
Section 2. — Subovate; body ventri- 
tacula. 
1. Haliotoideus p. 23, pi. II, 
cose; aperture longer than the 
Genus 48. 
f. 1, 2 
spire . 
SucciNEA. — Drapernaud. 
2. flexalis 3, 4 
5. auricularia p. 29, pi. XV, 
1. amphibea 
f. 29, 30, 31, 32 
f. 41, 42 
Genus 33. 
6. peregra 8, 9, 10, 11, 36, 37, 
2. gracilis 
34, 35 
Galericclqm Brown. 
38, 39, 40 
3. oblonga . 
pi. XVIII, f. 21 
1. Isevigatum p. 23, pi. XIX, 
7. involuta pi. XVIII, f. 5 
f. 35, 38 
Genus 49. 
2. ovatum 27, 28 
Genus 41. 
Achatina Lamarck. 
3. Otis... p. 24, pi. LVII, f. 16, 17 
Amphipeplea Nilsson. 
1. acicula .. 
p. 36, pi. XIV, f. 82, 
1. glutinosa... p. 30, pi. XV, f. 27, 28 
and pi. XVIII, f. 12 
Family V Ianthinia. 
2. lacustris 24, 25 
Genus 34. 
Genus 50. 
Ianthina Lamarck. 
Genus 42. 
Bulimus Lamarck. 
1. communis p. 24, pi. VIII, 
Physa Drapernaud. 
1. obscurus.. 
. p. 36, pi. XIV, f. 19, 
f. 1, 2 
1. fontinalis p. 30, pi. XIV, 
affd pi. XVIII, f. 13 
2. exigua 16, 17 
f. 54, 55 
2. montanus 
pi. XIV, f. 22. 
2. acuta 58, 59 
and pi. XVIII, f. 14 
Family VI Neritacea. 
3. hypnorum 60, 61 
3. lubricus . 
pi. XIV, f. 20 
Genus 35. 
4. acutus ... 
p. 37, f. 18 
Natica Adanson. 
Genus 43. 
1. monilifera p. 24, pi. XIII, 
Planorbis Muller. 
Genus 51. 
f. 1, 2, 8, 10 
Section 1. — Volutions devoid of a 
Bal^a Gray. 
2. Alderi p. 25, pi. LVII, f. 14 
Carina, rounded on both sides ; 
1. fragilis.... 
.. p. 37, pi. XIV, f. 11 
3. intricata pi. XIII, f. 13, 16 
spire slightly concave. 
4. Montagui 3, 6 
1. corneus p. 31, pi. XVIII, 
Genus 52. 
5. glabrissima 9, 12 
f. 31, 32, 33 
Clausilia. — D rapernaud. 
6. tuberosissima 18, 20 
2. albus 52, 53 
Section 1 
Shell smooth; the clau- 
7. helicoides p. 130, f. 24, 25 
3. Isevis 7, 8, 9 
sium or shelly plate with a notch 
8. squalida p. 130 
4. imbricatus... pi. XIV, f. 46, 47, 
at top, fitting into a plait situate 
and pi. XVIII, f. 11 
on the outer lip of the aperture. 
Genus 36. 
Section 2. — Volutions carinated. 
1. bidens.... 
.. p. 37, pi. XIV, f. 12 
* Neritina. — L amarck. 
5. carinatus p. 32, pi. XIV, 
Section 2 
Shells corrugated, and 
1. fluviatilis... p. 26, pi. XIII, f. 4, 
f. 35, 36, 37 
with the clausium entire at top. 
5, and pi. XVIII, f. 1, 2, 3 
6. mai'ginatus 39, 40, 41 
2. biplicata 
p. 38, f. 13 
7. vortex 44, 45 
3. rugosa.... 
14 
Family VII Peristomida. 
8. spirorbis p. 33, f. 42, 43 
4. Rolphii . 
pi. XVIII, f. 31 
Genus 37. 
Section 3. — Shell shining, trans- 
5. dubia ... 
p. 39, f. 32 
Paludina. — L amarck. 
lucent; spire deeply umbilicate; 
1. vivipara p. 26, pi. XIV, 
volutions provided with a slight 
Genus 53. 
f. 71, 72 
Carina. 
Pdpa Lamarck. 
2. Achatina 68,' 69 
9. nitidus 50, 51 
1. muscorum... p. 39, pi. XIV, f. 7 
3. impura p. 27, f. 72,* 73 
Section 4. — Destitute of a carina ; 
2. unidentata 4 
4. ventricosa 74, 75 
volutions rounded both before and 
3. bidentata 
6 
behind, and deeply umbilicated. 
4. marginata... pi. XVIII, f. 33, 34 
Genus 38. 
10. con tortus 33, 34 
5. umbilicata... p. 40, pi. XIV, f. 5 
Assiminia Leach. 
6. Anglica.. 
... pi. XVIII, f. 35, 36 
1. Grayana p. 27, pi. XVIII, 
Genus 44. 
7. juniper! 
pi. XIV, f. 1 
f. 3, 4 
Segmentina Fleming. 
1. lineata... p. 33, pi. XIV, f. 48, 49 
Genus 54. 
Genus 39. 
Vertigo Muller. 
Valvata Muller. 
Family IX Colimacea. 
Section 1.— 
-Shells dextral, nearly 
1. piscinalis p. 27, pi. XIV, 
Section 1. — Animals with two ten- 
cylindrical 
; apertnre externally 
f. 62, 63, 64, 65 
tacula. 
margined. 
2. cristata p. 28, f. 66, 67 
Genus 45. 
1. edentula 
p. 41, pi. XVIII, 
Cyclostoma Lamarck. 
f. 36* 
Family VIII Lymn^cea. 
1. elegans ... p. 34, pi. XIV, f. 28 
2. Pygmsea 
37 
Genus 40. 
2. marmorea... pi. XVIII, f. 15, 15 
3. cylindrica 
38 
Lymn^sa Lamarck. 
4. sexdentata pi. XIV, f. 8 
Section 1 . — Elongate ; volutions gra- 
Genus 46. 
5. palustris 
pi. XVIII, f. 39 
dually enlarging ; spire longer than 
Carychium Muller. 
6. Alpestris 
p. 42, f. 40 
the aperture. 
1. minimum... p. 34, pi. XIV, f. 10, 
Section 2. — 
Shell fusiform and sub- 
1. stagnalis p. 28, pi. XV, 
and pi. XVIII. f. 15* 
cylindrical 
; spiral convolutions 
f. 19, 21 
sinistral ; 
aperture externally 
2. palustris 17, 18 
Genus 47. 
margined. 
varieties... 4, 5, 7, 14, 15, 16, 23 
Acme. — H artmann. 
7. pusilla 
41 
3. minuta 12, 13 
1. fusca p. R4, pi. XTV, f. 9.n 
8. angustior 
. pi. XIV, f. 9 
4. elongata p. 29, f. 1, 2, 3, 5 
2. minuta p. 35, f. 26 
Genus 55. 
Azeca Leach. 
I. tridens p. 42, pi. XIV, f. 2 
Genus 5G. 
Helix. — L innaeus. 
Snb - Genus 1 . 
Helicogena — Ferussac. 
1. Pomatia p. 43, pi. XVI, 
f. 6, 12, 14 
2. aspersa 5, 13, 17, 18 
3. nemoralis ... 1, 2, 3, 4, 5, 6, 7, 
8, 9, 10 
4. hortensis ... p. 44, f. 11, 12, 19 
5. hybrida ... pi. XVIII, f. 27, 28 
6. Arbustorum ... pi. XVI, f. 16, 
20, 21, 22 
Sub -Genus 2. 
Helicigona-— F erussac. 
7. lapicida p. 45, pi. XVII, 
f. 9, 10, 11 
Sub -Genus 3. 
Amplexus. — Brown. 
8. pulchella pi. XIV, f. 76, 77 
9. creuella 78, 79 
Sub -Genus 4. 
Helicella — Ferussac. 
10. Cantiana p. 46, pi. XVII, 
f. 15, 16, 17 
II. Carthusiana 49, 50, 51 
12. rufescens 47, 53 
13. limbata 29, 30 
14. fulva 2 
15. fusca p. 47, f. 25, 26 
16. lamellata pi. XVIII, f. 47* 
17. aculeata pi. XVII, f. 1 
18. granulata p. 48, f. 8, 13 
20. revelata 3, 4, 5 
21. sericea ... pi. XVIII, f. 43, 44 
22. hispida pi. XVII, f. 40, 46 
23. concinna... pi. XVIII, f. 45, 46 
24. depilata p. 49, f. 47, 48 
Sub -Genus 5. 
Heliomanes. — Ferussac. 
25. virgata ... pi. XVII, f. 41, 42, 
43, 44, 45 
26. caperata 37, 38 
27. pisana p. 50, f. 27, 29, 32, 
33, 36, 38, 58 
28. ericitorum 21, 23, 28, 34 
Sub -Genus 6. 
Ver twill a TM. — Ferussac. 
29. rotuudata p. 51, f. 14, 18, 
19, 20, 24 
30. pygmsea... pi. XVIII, f. 48,* 49 
31. ambilicata... pi. XVII, f. 30, 31 
Sub- Genus 7. 
Hyalin JE — Ferussac. 
32. cellaria p. 52, f. 59, 60 
33. alliaria 48, 52 
34. nitidula pi. XVIII,* f. 1, 2 
35. lucida 3, 4 
36. radiatula p. 53, f. 5, 6 
37. crystallina 7, 8 
38. excavata 9, 10 
39. pura 11, 12 
Sub - Genus 6. 
Trigonostoma-— F erussac. 
40. obvoluta 13, 14 
