26. ,, ,, ,, CARINATA. Wareham, Dorset. 27. ,, caperata, _var._ MAJOR. England, Wales, Scotland. Distinct. 28. ,, ,, ,, NANA. England. 29. ,, ,, ,, SUBSCALARIS. Wales, Ireland. 30. ,, ,, ,, ALTERNATA. England, Kent. 31. ,, acuta, _var._ NIGRESCENS. England. PUPIDAE. 32. Pupa anglica, _var._ PALLIDA. Not rare. 33. ,, lilljeborgi, _var._ BIDENTATA. Ireland. {358} 34. ,, pygmea, _var._ PALLIDA. Dorset and Devon. 35. Clausilia rugosa, _var._ PARVULA. Ireland. STENOGYRIDAE. 36. Cochlicopa lubrica, _var._ HYALINA. Wales, Scotland. 37. Coecilianella acicula, _var._ ANGLICA. England. SUCCINEIDAE. 38. Succinea putris, _var._ SOLIDULA. Wiltshire. 39. ,, virescens, _var._ AUREA. Ireland. 40. ,, pfeifferi, ,, RUFESCENS. England, Ireland. 41. ,, ,, ,, MINOR. England. LIMNAEIDAE. 42. Planorbis fontanus, _var._ MINOR. England. 43. ,, carinatus, ,, DISCIFORMIS. England. 44. ,, contortus, ,, EXCAVATUS. Ireland. 45. ,, ,, ,, MINOR. 46. Physa fontinalus, _var._ OBLONGA. England, Wales, Ireland. 47. LIMNAEA INVOLUTA. Ireland. 48. Limnaea glutinosa, _var._ MUCRONATA. 49. ,, peregra, _var._ BURNETTI. Scotland. Very distinct. 50. ,, ,, ,, LACUSTRIS. Perhaps in C. Verde Islands. 51. ,, ,, ,, MARITIMA. Great Britain. 52. ,, ,, ,, LINEATA. England. 53. ,, ,, ,, STAGNALIFORMIS. England. 54. ,, stagnalis, _var._ ELAGANTULA. Curious. In a pond at Chislehurst. 55. ,, palustris, _var._ CONICA. England, Ireland. 56. ,, ,, ,, TINCTA. England, Wales. 57. ,, ,, ,, ALBIDA. England. 58. ,, truncatula, _var._ ELEGANS. England, Ireland. Distinct. 59. ,, ,, ,, FUSCA. Wales. 60. Ancylus lacustris, _var._ COMPRESSUS. England. PALUDINIDAE. 61. Paludina vivipara, _var._ EFASCIATA. England. Not uncommon. 62. ,, ,, ,, ATROPURPUREA. Pontypool. RISSOIDAE. 63. HYDROBIA JENKINSII. Thames Estuary. 64. ,, ventrosa, _var._ MINOR. 65. ,, ,, ,, DECOLLATA. 66. ,, ,, ,, OVATA. 67. ,, ,, ,, ELONGATA. 68. ,, ,, ,, PELLUCIDA. CYRENIDAE. 69. Sphaerium corneum, _var._ COMPRESSUM. 70. ,, ,, ,, MINOR. 71. ,, ,, ,, STAGNICOLA. 72. ,, ovale, _var._ PALLIDUM. England. 73. ,, lacustre, _var._ ROTUNDUM. Wales. 74. Pisidium pusillum, _var._ GRANDIS. 75. ,, ,, ,, CIRCULARE. Wales. 76. ,, nitidum, _var._ GLOBOSUM. {359} UNIONIDAE. 77. Unio tumidus, _var._ RICHENSIS. Regent's Park. Peculiar form. 78. ,, pictorum, _var._ LATIOR. England.