CHAP. XVI 



THE BRITISH ISLES 



359 



73. Limnsea peregra, v. maritima, Jeff'r. Gt. Britain. 



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



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



76. ,, auriciilaria, v. reflexa, Nelson, Yorkshire. 



77. V. gibbosa, Taylor. Yorkshire. 



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



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



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



81. 5, ,, V. obesa, Taylor. Kent. 



82. V. fasciata, Nelson. England. 



83. 5, truncatula, v. elegans, JefFr. England, Ireland. Distinct. 



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



85. Amphipeplea glutinosa, v. niucronata, Jeffr. 



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



America. 



87. Aplecta hypnorum, v. cuprella, Eowe. 



88. Planorbis fontanus, v. albida, Nelson. 



89. ,, V. minor, Melvill. 



90. dilatatus, Gould. Lancashire ; also N. America, 



91. ,, parvus, v. compressa, Lloyd. Also a N, American species. 



92. spirorbis, v. piisca, Taylor. England. 



93. carinatus, v. alba, Hudson. England. 



94. marginatus, v. sinistrorsa, Taylor. England. 



95. albus, V. sulcata, Taylor. 



96. ,, contortus, v. excavata, Cockerell. Ireland. 



97. V. minor, Taylor. Yorkshire. 



98. Velletia lacustris, v. compressa, Jeffr. England. 



Cydostomidce. 



99. Cyclostoma elegans, v. marmorea. Brown. England and Scotland. 



Paludestrinidce. 



100. Paludestrina taylori, Smith. Lani^ashire. 



101. jenkinsi, Smith. England and Ireland. 



102. V. caiinata, Marshall. 



103. V. tumida, Jenkins. 



104. ventrosa, r. minor, Jeffr. Wales. 



105. 5, V. decollata, Jeffr. Wales and Guernsey. 



106. ,, V. ovata, Jeffr. Wales. 



107. V. elongata, Jeffr. Guernsey. 



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



Unionidm. 



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. 



