REFERENCE TO PLATES, VOL. XVI. 319 



FIGURE PAGE 



75. Macroceramus richaudi Pet. II. Winchester, del... 123 



76. Macroceramus richaudi Pet. J. de Conch 123 



77. 78. Macroceramus cyrtopleurus Pfr. Conchyl. Cab. 129 



79-81. Macroceramus johannis Pfr. Novit. Conch 117 



82-85. Macroceramus subcylindricus Pils. AVinchester, 



del 134 



86. Macroceramus subcylindricus Pils. Anima R. Win- 



chester, del 134 



87. Macroceramus richaudi sublineatus Pils. Winches- 



ter, del 125 



PLATE 25. 



88-90. Microceramus denticulatus Pfr. Winchester, del. 161 

 91-94. Microceramus gossei Pfr. Mandeville. Winches- 

 ter, del 159 



95-98. Microceramus floridanus Pils. Sarasota Bay. Win- 

 chester, del. . 159 



1-4. Microceramus texanus Pils. Winchester, del 157 



5, 6. Microceramus concisus arctispirus Anc. Winches- 

 ter, del 156 



7-10. Microceramus concisus Morel. Tunkas. Winches- 

 ter, del 155 



11. Microceramus concisus Morel. Sta. Ana. Winches- 



ter, del 155 



12. Microceramus concisus Morel. Tekanto. Winches- 



ter, del 155 



PLATE 26. 



13-15. Microceramus swif ti Bid. Winchester, del 162 



16. Microceramus gossei providentia Pils. AVinchester, 



del 161 



17-20. Microceramus pontificus Gld. Miami. AVinches- 

 ter, del 158 



21, 22. Microceramus kieneri Pfr. After Bland 154 



23. Microceramus kieneri Pfr. Conch. Cab 154 



24. Microceramus amplus Guncll. Novit. Conch 172 



25. Microceramus mexicanus Mart. Biol. Centr. Amer. 156 



26. 27. Microceramus mexicanus Mart, Pilsbry, del. . . . 156 



28. Microceramus angulosus Gundl. AVinchester, del... 166 



29. Microceramus amplus Gundl. Pilsbry, del 172 



PLATE 27. 



30. Microceramus turricula Pfr. (= petitianus) . Conch. 



Cab. 165 



