53 



61. Atrina rigida Dillwyn. 



62. Atrina serrata Sowerby. 



63. Ostrea virginica Gmelin. 



64. Pecten exaspcratus Sower- 

 by. 



65. Pecten ornatus Lamarck. 



66. Pecten gibbus Linne. 



67. Pecten gibbus var. disloca- 

 tus Say. 



68. Pecten gibbus var. irradians 

 Lamarck. 



69. Spondylus echinatus Mar- 

 tyn. 



70. Anomia simplex Orbigny. 



71. Modiolus demissus Dillwyn. 



72. Cardita domingensis Or- 

 bigny. 



73. Cardita Horidana Conrad. 



74. Venericardia tridentata Say. 



75. Venericardia perplana Con- 

 rad. 



76. Cyrena Horidana Conrad. 



77. Cyrena caroliniana Bosc. 



78. Sportella constricta Conrad. 



79. Codakia orbicularis Linne. 



80. Lucina chrysostoma Phil- 

 ippi. 



81. Phacoides pectinatus Gme- 

 lin. 



82. Phacoides muricatus Speng- 

 ler. 



83. Phacoides multilineatus 

 Tuomey and Holmes. 



84. Phacoides Horidana Conrad. 



85. Phacoides nassula Conrad. 



86. Cardium isocardia Linne. 



87. Cardium robustum Solan- 

 der. 



88. Cardium muricatum Linne. 



89. Cardium spinosum var. 

 spinosum Meuchen. 



90. Cardium serratum Linne. 



91. Cardium Mortoni Conrad. 



92. Montacuta Horidana Dall. 



93. Diplodanta punctata Say. 



94. Dosinia discus Reeve. 



95. Dosinia elegans Conrad. 



96. Transennella Conradina 

 Dall. 



97. Transennella caloosana 

 Dall 



98. Macrocallistra nimbosa So- 

 lander. 



99. Chione cancellata Linne. 



100. Anomalocardia caloosana 

 Dall. 



101. Anomalocardia brasiliana 

 Gmelin. 



1 02. Venus campechiensis Gme- 

 lin. 



103. Parastarte triquetra Con- 

 rad. 



104. Angulus versicolor Cozzens. 



105. Angulus sybariticus Dall. 



106. Tellina umbra Dall. 



107. Tagelus gibbus Spengler. 



108. Tagelus divisus Spengler. 



109. Donax variabilis Say. 



no. Gemma gemma var. pur- 



purea Lea. 

 in. Labiosa canaliculata Say. 



112. Rangia cuneata Gray. 



113. Mulinia later alis Say. 



114. Mulinia lateralis var. cor- 

 buloides Reeve. 



115. Ervilia concentrica Gould. 



1 1 6. Co ngeria lencophaeata Con- 

 rad. 



117. P kolas campechiensis Gme- 

 lin. 



1 18. Barnea costata Linne. 



119. Gastrochaena cuneiformis 

 Spengler. 



