DESCRIPTION OF THE PLATES. 
FIG. 
PAGE 
77. 
Pyramis lactea 
11 
78. 
Pyramis Bryerea 
11 
79. 
Pyramis Zetlandica 
11 
60. 
Pyramis denticulata 
11 
81. 
Pyramis vitrea 
13 
82. 
Pyramis virginea 
13 
83. 
Rissoa graphica 
12 
Plate X. 
1, 
2, 3, 4, 5, 6, 7, 8, 9. Litto- 
rina littorea 15 and 
128 
10, 1 1, 12, 13, 14, 25. Littorina 
rudis 15 and 
128 
15, 
16. Littorina jugosa... 16 
and 
128 
17. 
Littorina petrsea... 16 and 
128 
18, 
19. Littorina tenebrosa ... 
16 and 
128 
20, 
21. Littorina labiata... 16 
and 
128 
22. 
Littorina dispar... 16 and 
128 
23. 
Littorina aurea... 17 and 
128 
24. 
Littorina Neritiforma... 17 
and 
128 
26,27. Littorina ziczac... 16 
and 
128 
28, 
29. Margarita margaritacea 
17 and 
128 
30, 
3 1 . Margarita olivacea 
17 and 
128 
33, 
34. Littorina striatula 
17 and 
128 
35. 
Lacuna quadrifasciata 
16 and 
128 
36, 37. Margarita carnea 
17 and 
128 
38, 
39. Littorina fabalis... 17 
and 
128 
40, 
4 1 . Sty lifer astericola 
- 
10 and 
133 
42. 
Phasianella pullus 
9 
43. 
Phasianella cassior 
10 
44, 
45. Lacuna bifasciata 
10 and 
128 
46. 
Lacuna vincta 9 and 
128 
47. 
Lacuna cornea 10 and 
128 
48. 
Lacuna canalis ... 9 and 
128 
49. 
Lacuna striata 10 and 
128 
50, 
51. Lymnsea peregra, var. 
29 and 
128 
52, 
63. Lacuna retusa 
128 
64. 
Lacuna fasciata ... 1 0 and 
128 
Plate XI. 
1, 
4. Trochus littoralis 
18 
2, 
3. Trochus tumidus 
18 
5, 
8, 10. Trochus cinei'arius . 
18 
6, 
7. Trochus crassus 
19 
9, 
1 1 . Trochus umbilicatus ... 
18 
12, 
15. Trochus Magus 
17 
13, 
14. Trochus papillosus ... 
19 
16, 
17, 18, 19, 21, 22, 24, 29. 
Trochus Zizyphinus 
18 
20, 
23. Trochus discrepans ... 
19 
25, 
26. Trochus striatus 
19 
27, 
28. Trochus exiguus 
19 
30, 
31. Trochus subcarinatus . 
18 
FIG. PAGE 
Plate XII. 
1,4,6. Ancylus fluviatilis ... 59 
2, 18. Haliotis tuberculata ... 23 
3, 5, 7. Ancylus lacustris 60 
8, 9. Fissurella Zetlandica, 
Fleming — 
10, 11. Fissurella Grseca 61 
12, 13. Fissurella marginata, 
Fleming — 
14, 15, 16. Sipho Noachina ... 61 
17, 19. Emarginula fissura ... 62 
20. Sipho radiata 61 
21, 22. Emarginula rosea 62 
Plate XIII. 
1, 2, 8, 10. Natica monilifera 24 
3, 6. Natica Montagui 25 
4, 5. Neritina fluviatilis 26 
7, 11. Natica nitida 130 
9, 12. Natica glabrissima 25 
13, 16. Natica intricata 25 
14, 15, 21, 22, 23. Littoriua 
littoralis 25 
(22, young shell.) 
17, 19. Lacuna pallidula... 25 
and 128 
18, 20. Natica tuberossissima . 25 
24, 25. Natica Helicoides 130 
Plate XIV. 
1. Pupa juniper! 40 
2. Azeca tridens 42 
3. Pupa muscorum 39 
4. Pupa unidentata 39 
5. Pupa umbilicata 40 
6. Pupa bidentata 39 
7. Pupa muscorum 39 
8. Vertigo sexdentata 41 
9. Vertigo angustior 42 
10. Carycbium minimum 34 
11. Balasa fragilis 37 
12. Clausilia bidens 37 
13. Clausilia biplicata 38 
14. Clausilia rugosa 38 
15. Clausilia labiata. Foreign... — 
16. Clausilia papillaris, Foreign — 
17. Clausilia plicatula. Foreign — 
18. Bulimus acutus 37 
1 9. Bulimus obscurus 36 
20. Bulimus lubricus 36 
2 1 . Bulimus obscurus, v. bi-evis 36 
22. Bulimus montanus 36 
23. Bulimus obscurus 36 
24. Bulimus decollatus, Fo- 
reign — 
25. Acme fusca 34 
26. Acme minuta 34 
27. Lymnsea minuta, var 28 
28. Cyclostoma elegans 34 
29, 30. Cyclostoma ferrugine- 
um, Foreign — 
31, 32, 33. Planorbis corneus . 31 
33,* 34. Planorbis contortus ... 33 
35, 36, 37. Planorbis carinatus 32 
36, 39, 40, 41. Planorbis mar- 
ginatus 32 
(38 a remarkable monstrosity.) 
42, 43. Planorbis spirorbis 33 
44, 45. Planorbis vortex 32 
2 N 
FIG. PAGE 
46,47. Planorbis imbricat US ... 31 
48, 49. Segmentina lineata ... 33 
50, 5 1 . Planorbis nitidus 33 
52, 53. Planorbis albus 31 
54, 55, 56, 57, 63, 84. Physa 
fontinalis 30 
(56 and 57, var. 1 ; 83 and 84, 
var. 2.) 
58, 59. Physa acuta 30 
60,61. Physa hypnorum 30 
62,63, 64, 65. Valvata piscinalis 27 
(64 and 65, variety.) 
66, 67. Valvata cristata 28 
68, 69. Paludina achatina 26 
71, 72. Paludina vivipara 26 
72, * 73. Paludina impura 27 
74, 75. Paludina ventricosa ... 27 
76, 77. Helix pulchella 45 
78, 79. Helix crenella 45 
80,81. Helix fulva 47 
82. Achatina acicula 36 
Plate XV. 
1, 2, 3, 5. Lymnaea elongata. 29 
4, 6, 7, 14, 15, 16, 17, 18, 23, 
26. Lymnsea palustris 28 
(4, 14, 15, 16, and 23, varieties; 
6 and 7, a variety with the 
apex decollated ; 26, variety h 
of Drapernaud.) 
8, 9, 10, 11, 36, 37, 38, 39, 
40. Lymnsea peregra 29 
(8, 9, 10, 1 1, 36, and 38, variety 
1, ovata; 10 and 1 1, of a large 
size, found near Bury, Lan- 
cashire; 37, vai'iety 2, ovata; 
39 and 40, variety limosa.) 
12, 13. Lymnsea minuta 28 
19,20,21,22,23, 33. Lymnsea 
stagnalis 28 
(20 and 33, young shells; 22 and 
23, a variety.) 
24, 25. Amphipeplea lacustris . 30 
27, 28. Amphipeplea glutinosa. 30 
29, 30, 31, 32. Lymnsea auricu- 
laria 29 
34, 35. Succinea gracilis 35 
41,42. Succinea amphibea ... 35 
Plate XVI. 
1, 2, 3, 4, 7, 8, 9, 10. Helix 
nemoralis 43 
(4. young shell.) 
5, 13, 17, 18. Helix aspersa... 43 
(18, young shell.) 
6, 12, 14. Helix pomatia 43 
(6, young shell.) 
11, 15, 19. Helix hortensis ... 44 
16, 20, 21, 22. Helix arbusto- 
rum 44 
(16, young shell.) 
Plate XVII. 
1. Helix aculeata 47 
2. Helix fulva 47 
3. 4, 5. Helix revelata 48 
6, 7, 12. Vitidna pellucida ... 54 
8, 13. Helix granulata 48 
9, 10, 11. Helix lapicida 45 
141 
FIG. PAGE 
14, 18, 19, 20, 24. Helix ro- 
tundata 51 
15, 16, 17. Helix Cautiana ... 46 
21, 22, 23, 28, 34. Helix erici- 
torum 50 
(22, young shell; 28, a remark- 
able lusus.') 
25,26. Helix fusca 47 
27, 29, .32, 33, 35, 36, 38, 58. 
Helix pisana 50 
(32 and 36, young shells.) 
30,31. Helix umbilicata 51 
32, 41, 42, 43, 44, 45. Helix 
virgata 49 
(32, young shell; 41 and 45, a 
lusus naturcB.') 
37, 39. Helix caperata 39 
40, 46. Helix hispida 48 
47, 53. Helix rufescens ......... 46 
48, 52. Helix alliaria 52 
49, 50, 51. Helix Carthusiana. 46 
54, 55, 56. Helix margaritacea 54 
59,60. Helix cellaria 51 
Plate XVIII. 
1, 2, 3. Neritina fluviatiles ... 25 
(1, the operculum.) 
1,* 1,* Planorbis margiuatus, 
var. rhombeus of Turton . 32 
3, 4. Assiminia Grayana 27 
5. Lymnsea involuta 29 
7, 8, 9. Planorbis Isevis 31 
10, 10. Planorbis imbricatus ... 31 
12. Achatina acicula 36 
13. Bulimus obscurus 36 
14. Bulimus montanus 36 
15. 15. Cyclostoma marmorea. 34 
15,* 15.* Carycbium minimum 34 
17, 18. Lymnsea peregra 29 
21, 21. Succinea oblonga 35 
22, 23. Succinea amphibia ... 35 
27, 28. Helix hybrida 44 
29, 30. Helix limbata 47 
31. Clausilia Rolphii 38 
32. Clausilia dubia 39 
33. 34. Pupa marginata 39 
35. 36. Pupa Anglica 40 
(36, young shell.) 
36. * 36.* Vertigo edentula ... 41 
37. Vertigo pygmsea 41 
38. Vertigo cylindrica 41 
39. Vertigo palustris 41 
40. Vertigo alpestris 42 
41. Vertigo pusilla 42 
43, 44. Helix ciricea 48 
(44, part of two volutions mag- 
nified.) 
45, 46. Helix concinna 48 
47, 48. Helix depilata 49 
48, * 49. Helix pygmsea 51 
Plate XVIII.* 
1, 2. Helix nitidula 52 
3, 4. Helix lucida 52 
5, 5,* 6. Helix radiatula 53 
(5, * natural size.) 
7, 8, 8.* Helix crystallina ... 63 
(8,* natural size.) 
9, 10. Helix excavata 53 
