EXPLANATION OF PLATES. 431 



PIGHTRE. FAOB. 



88. Solecurtus (Novaculina) constricta, Lam. China, . 134 



89. Solyma lineolatus, Conr. Cretaceous ; New Jersey, . 134 



90. Prothyris Meeki, Winchell. Carboniferous ; Ohio, . 138 



91. 92. Saxicava rugosa, Linn. Eur., America, Australia, 135 



93. Corbula Mediterranea, Costa. Mediterranean Sea, . 138 



94. Corbula sulcata, Brug. Senegal, .... 138 



95. Corbulamellagregaria, Meek and Hayden. Cretaceous; 



Montana, 139 



96. Sphenia Binghami, Turton. Europe, .... 140 

 9*1. Poromya granulata, Nj'st. Europe, .... 140 

 98,99. Pleurodesma Mayeri, Hoernes. Tertiary ; Europe, 140 



1-3. Spheniopsis scalaris, Braun. Tertiary ; Germany, . 141 

 4, 5. Neaera ornatissima, d'Orb. Cuba, .... 141 



Plate 106. 



6. Solen vagina, Linn. Europe, ..... 129 



7. Solen (Solena) obliqua, Spengler. W. Indies, . . 130 



8. Ensis ensis, Linn. Atlantic Coast, U. S. ; Europe, . 130 



9. Ensis siliqua, Linn. Europe, ..... 130 

 10, 11. Cultellus cultellus, Linn. Indian Ocean, . . 131 



12. Ceratisolen legumen, Linn. Europe, .... 132 



13. Siliqua radiata, Linn. Java, . . . , .133 



14. Legumenaia elliptica, Conr. Cretaceous; U. S., . . 132 



15. Macha strigillata, Linn. Mediterranean, . . . 134 



16. Macha (Azor) coarctata, Gmel. Europe, . . .134 

 IT. Cyrtodaria siliqua, Spengler. Newfoundland, . .136 



18. Mya truncata, Linn. Atlantic U. S., Europe, . .137 



19, 20. Mya arenaria, Linn. Atlantic U. S., Europe, . 137 

 21,22. Tugoniaanatina, Gmel. West Coast of Africa, . 137 

 23-25. Corbula (Potamomya) erodina, Lam. Africa? . 139 



26. Poromya quadrata, Hinds. Guadeloupe, . . . 140 



27. Cryptomya Philippinarum, A. Ad. Philippines, . 142 



28. Platyodon cancellata, Conr. California, . , .137 



Plate 107. 



29. 30. Planopaea (Glycimeris) glj^cimeris. Born. Mediter- 



ranean Sea, . . . . . . . . 136 



31. Panopaea (Glycimeris) glycimeris, Born, a, a, adductor 



muscles ; p, posterior pedal muscle ; r, renal organ ; 



/, foot ; t, labial tentacles ; m, mantle, . . . 136 



32. Cyrtodaria siliqua, Spengler. Newfoundland, a, a, 



adductor muscle ; p, pedal muscle ; s, siphonal muscle ; 

 /, foot ; ^, labial tentacles ; gr, gills, much contracted 

 and crumpled, . . . . . . . .136 



33-35. Pachydon obliqua, Gabb. Fossil. Pebas Group, 



Upper Amazon, 138 



