CHAP. XVI 



THE BRITISH ISLES 



359 



73. 



74. 



75. 

 76. 



77. 

 78. 

 79. 

 80. 

 81. 

 82. 

 83. 

 84. 

 85. 



87. 

 88. 

 89. 

 90. 

 91. 

 92. 

 93. 

 94. 

 95. 



Liinnaea peregra, v. inaritima, Jeffr. Gt. Britain. 

 ,, ,. V. lineata, Bean. England. 



,, ,, V. stagnaliforniis, Taylor. England. 



,, auricularia, v. reflexa, Nelson. Yorkshire. 

 ,, ,, V. gibbosa, Taylor. Yorkshire. 



,, palustris, v. conica, Jeffr. England, Ireland. 

 ,, ,, V. tincta, Jeffr. England, Wales. 



,, ,, V, albida, Nelson. England. 



,, ,, V. obesa, Taylor. Kent. 



,, ,, V. fasciata, Nelson. England. 



,, truncatula, v. elegans, Jeffr. England, Ireland. Distinct. 

 ,, ,, V, fusca, Cockerell. Wales. 



Amphipeplea glutinosa, v. mucronata, Jeffr. 

 Physa heterostroplia, Say. W. and Mid-W. England ; also N. 



America. 

 Aplecta hypnorum, v. cuprella, Rowe. 

 Planorbis fontanus, v, albida, Nelson. 

 ,, V. minor, Melvill. 



dilatatus, Gould. Lancashire ; also N. America, 

 parvus, V. compressa, Lloyd. Also a N. American species, 

 spirorbis, v. prisca, Taylor. England, 

 carinatus, v. alba, Hudson. England, 

 marginatus, v. sinistrorsa, Taylor. England, 

 albus, V, sulcata, Taylor, 

 contortus, v. excavata, Cockerell. Ireland. 

 ,, -y. minor, Taylor. Yorkshire. 



Yelletia lacustris, v. compressa, Jeffr. England. 



Cyclostomidoe. 

 99. Cyclostoma elegans, v. marmorea, Brown. 



Paludestrinidm, 



100. Paludestrrna taylori. Smith. Lancashire. 



101. ....... _ , , 



102. 

 103. 

 104. 

 105. 

 106. 

 107. 

 108. 



England and Scotland. 



jenkinsi, Smith. England and Ireland. 



,, V. caiinata, Marshall. 



,, V. tumida, Jenkins, 

 ventrosa, v. minor, Jeffr. Wales. 



, , V. decollata, Jeffr. Wales and Guernsey. 



,, V. ovata, Jeffr. Wales. 



,, V. elongata, Jeffr. Guernsey, 



,, V. pellucida, Jeffr. Pembroke and Yorkshire. 



Unionidce. 



109. Unio tumidus, v. richensis, Harting. Regent's Park. Peculiar form. 



110. ,, pictorum, v. latior, Jeffr. Oxford, 



111. ,, margaritiferus, v. olivacea, Brown. Westmoreland. 



112. Anodonta cygnea, v. incrassata, Shepp. England. 



113. ,, ,, V. pallida, Jeffr. England and Wales. 



Corhiculidce, 



114. Sphserium corneum, v. compressa, Gray. 



115. ,, ,, V. minor. Gray. 



