DESCRIPTION OF THE PLATES. 



141 



77. Pyramis lactea 



78. Pyramis Bryerea .... 



79. Pyramis Zetlandica . 

 SO. Pyramis denticulata . 



81. Pyramis vitrea 



82. Pyramis virginea 



83. Rissoa gTaphica .... 



Plate X. 

 , 2, 3, 4, 5, 6, 7, 8, 9. Litto- 



rina littorea 15 and 128 



. 11,12, 13, 14,25. Littorina 



rudis 15 and 128 



, 16. Littorina jugosa... 16 



and 128 

 . Littorina petrsea... 16 and 128 

 , 19. Littorina tenebrosa ... 



16 and 128 

 ,21. Littorina labiata... 16 



and 128 

 . Littorina dispar... 16 and 128 

 . Littorina aurea ... 17 and 128 

 . Littorina Neritiforma... 17 



and 

 ,27. Littorina ziczac... 16 



and 

 , 29. Margarita margaritacea 



17 and 

 ,31. Margarita olivacea 



17 and 128 

 ,34. Littorina striatula 



17 and 128 

 . Lacuna quadrifasciata 



16 and 128 

 ,37. Margarita carnea 



17 and 128 

 ,39. Littorina fabalis... 17 



and 128 



,41. Stylifer astericola 



10 and 133 



, Phasianella pullus 9 



. Phasianella cassior 10 



45. Lacuna bifasciata 



10 and 128 



, Lacuna vincta 9 and 128 



Lacuna cornea 10 and 128 



Lacuna canalis ... 9 and 128 



, Lacuna striata 10 and 128 



51. Lymnsea peregra, var. 



29 and 128 



53. Lacuna retusa 128 



Lacuna fasciata... 10 and 128 



Plate XI. 



4. Trochus littoralis 18 



3. Trochus turn idus 18 



8, 10. Trochus cinerarius . 18 



7. Trochus crassus 19 



11. Trochus umbilicatus... 18 



15. Trochus Magus 17 



14. Trochus papillosus ... 19 

 17, 18, 19, 21, 22, 24, 29. 



Trochus Zizyphinus 18 



23. Trochus discrepans ... 19 



26. Trochus striatus 19 



28. Trochus exiguus 19 



31. Trochus subcarinatus . 18 



Plate XII. 



4, 6. Ancylus fluviatilis ... 



18. Haliotis tuberculata ... 



5, 7. Ancylus lacustris 



9. Fissurella Zetlandica, 



Fleming 



11. Fissurella Grseca 



13. Fissurella margiuata, 



Fleming 



15, 16. Sipho Noachina ... 



19. Emarginula fissura ... 

 Sipho radiata 



22. Emarginula rosea 



Plate XIII. 



1, 2, 8, 10. Natica monilifera 



3, 6. Natica Montagui 



4,5. Neritina fluviatilis 



7, 11. Natica nitida 



9, 12. Natica glabrissima 



13,16. Natica intricata 



14, 15, 21, 22, 23. Littorina 



littoralis 



(22, young shell.) 



17, 19. Lacuna pallidula... 25 



and 



18, 20. Natica tuberossissima . 

 24, 25. Natica Helicoides 



Plate XIV. 



1. Pupajuniperi 



2. Azeca tridens 



3. Pupa muscorum 



4. Pupa unidentata 



5. Pupa umbilicata 



6. Pupa bidentata 



7. Pupa muscorum 



8. Vertigo sexdentata 



9. Vertigo angustior 



10. Carychium minimum 



11. Balsea fragilis 



12. Clausilia bidens 



13. Clausilia biplicata 



14. Clausilia rugosa 



15. Clausilia labiata, Foreign... 



16. Clausilia papillaris, Foreign 



17. Clausilia plicatula, Foreign 



18. Bulimus acutus 



19. Bulimus obscurus 



20. Bulimus lubricus 



21. Bulimus obscurus, v. brevis 



22. Bulimus montanus 



Bulimus obscurus 



24. Bulimus decollatus, Fo- 

 reign 



25. Acme fusca 



Acme mimita 



27. Lymnsea mimita, var 



28. Cyclostoma elegans 



29. 30. Cyclostoma ferrugine- 



um, Foreign 



31, 32, 33. Planorbis corneus . 

 33,* 34. Planorbis contortus... 

 35, 36, 37. Planorbis carinatus 

 38, 39, 40, 41. Planorbis mar- 



ginatus 



(38 a remarkable monstrosity.) 



42,43. Planorbis spirorbis 



44,45. Planorbis vortex 



2 N 



Plate XV. 

 1, 2, 3, 5. Lymnsea elongata . 

 4, 6, 7, 14, 15, 16, 17, 18, 23, 



26 . Lymnsea palustris 



(4, 14, 15, 16, and 23, varieties; 

 6 and 7, a variety with the 

 apex decollated ; 26, variety b 

 of Drapernaud.) 

 8, 9, 10, 11, 36, 37, 38, 39, 



40. Lymnsea peregra 



(8, 9, 10, 1 1, 36, and 38, variety 

 l.ovata; 10 and 1 1, of a large 

 size, found near Bury, Lan- 

 cashire; 37, variety 2, ovata; 

 39 and 40, variety limosa.) 



12, 13. Lymnsea minuta 



19, 20, 21, 22, 23, 33. Lymnsea 



stagnalis 



(20 and 33, young shells; 22 and 



23, a variety.) 

 24, 25. Amphipeplea lacustris. 

 27, 28. Amphipeplea glutinosa. 

 29,30,31,32. Lymnsea auricu- 



laria 



34,35. Succinea gracilis 



41,42. Succinea amphibea ... 



Helix 



Plate XVI. 

 1, 2, 3, 4, 7, 8, 9, 10. 



nemoralis 



(4. young shell.) 



5, 13, 17, 18. Helix aspersa... 



(18, young shell.) 



3, 12, 14. Helix pomatia 



(6, young shell.) 

 11, 15, 19. Helix hortensis ... 

 16, 20, 21, 22. Helix arbusto- 



rum 



(16, young shell.) 



Plate XVII. 



1. Helix aculeata 



2. Helix fulva 



3. 4, 5. Helix revelata 



6, 7, 12. Vitrina pellucida ... 



8, 13. Helix granulata 



9, 10, 11. Helix lapicida 



14, 18, 19, 20, 24. Helix ro- 

 tundata 



15, 16, 17. Helix Cantiana ... 

 21, 22, 23, 28, 34. Helix erici- 



torum 



(22, young shell; 28, a remark- 

 able lusus.} 



25, 26. Helix fusca 



27, 29, 32, 33, 35, 36, 38, 58. 



Helix pisana 



(32 and 36, young shells.) 



30,31. Helix umbilicata 



32, 41, 42, 43, 44, 45. Helix 



virgata 



(32, young shell; 41 and 45, a 

 lusus naturce.) 



37,39. Helix capeiata 



40, 46. Helix hispida 



47,53. Helix rufescens 



48, 52. Helix alliaria 



49, 50, 51. Helix Carthusiana. 

 54, 55, 56. Helix margaritacea 

 59, 60. Helix cellaria 



Plate XVIII. 

 1, 2, 3. Neritina fluviatiles ... 



(1, the operculum.) 

 1,* 1.* Planorbis marginatus. 

 var. rhombeus of Turton . 



3, 4. Assiminia Grayana 



5. Lymnaea involuta 



7,8,9. Planorbis laevis 



10, 10. Planorbis imbrieatus ... 



12. Achatina acicula 



13. Bulimus obscurus 



14. Bulimus montanus 



15. 15. Cyclostoma marmorea. 

 15,* 15.* Carychium minimum 



17, 18. Lymnsea peregra 



21,21. Succinea oblonga 



22,23. Succinea amphibia ... 



27, 28. Helix hybrida 



29,30. Helix limbata 



31. Clausilia Rolphii 



32. Clausilia dubia 



33,34. Pupa marginata 



35,36. Pupa Auglica 



(36, young shell.) 

 36,* 36.* Vertigo edentula ... 



37. Vertigo pygmaea 



38. Vertigo cylindrica 



39. Vertigo palustris 



40. Vertigo alpestris 



41. Vertigo pusilla 



43,44. Helix ciricea 



(44, part of two volutions mag- 

 nified.) 



45, 46. Helix concinna 



47,48. Helix depilata 



48,* 49. Helix pygmsea 



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 ... 53 



(8,* natural size.) 

 9. 10. Helix excavata 5:; 



