114 



TABLE— Continued. 



34. GEN. SOLEMTA. 



93. S. mhplicata, Meek & Hayden 



35. GEN. MACTRA. 



94. M. formosa, Meek & Hayden 



95. M. Warrenana, Meek & Hayden. 



96. M. alta, Meek & Hayden 



36. GEN. TELLIXA. 



97. T.? cheymnmm, Meek & Hayden. 



98. T. equilateralis. Meek & Hayden... 



99. T. scihila, Meek cSt Hayden 



100. T. svhdliptica, Meek & Hayden ... 



101. T. Proiiti, Meek & Hayden 



102. T. mbtortuosa, Meek & Hayden 



37. GEN. CYTIIEREA. 



103. C. Missouriana, Morton 



104. C. orhkulcUa, Hall & Meek 



105. C. tenuis, Hall &Meek 



106. C. Deimji, Meek & Hayden 



107. C. Nehra&censis, Meek & Hayden. 



108. C. pelliccula, Meek & Hayden 



109. C. Owenana, Meek & Hayden 



38. GEN. VENUS. 



110. V. ? circularis, Meek & Hayden 



39. GEN. LEDA. 



111. L. ventricosa, Meek & Hayden. . 



112. L. Moreauemis, Meek & Hayden 



Formations in ascending 

 order. 



3 4 



40. NEW GEN. COREULAMELLA, !\Ieek & Hajdcn. 



113. C. (jregaria, Meek & Hayden 



41. GEN. THKACIA. 



114. T.f gracilis, Meek & Hayden 



42. GEN. ASTARTE. 



115. A . gregaria, Meek & Hayden -_ 



43. GEN. CRASSATELLA. 



116. C. Evansi, Hall & Meek , 



