PLEIOCENE FOSSILS. 



PLATE XXV. 



DENTALIAD^.-CALYPTRiEIDE-FISSURELLIDiE.-NATICIDJ;. 



DESTALUDJ. 



Fig. 1. DENTALTUM ATTENUATUM. Natural size. Page 105. 

 " 2. DENTAL1UM PLEIOCENUM. Natural size. Page 105. 

 " 3. DENTALIUM THALLUS. Natural size. Page 106. 



CALYPTRJlIDiE. 



Fig. 4. CRUCIBULUM COSTATA. Interior and exterior, natural size. Page 107. 



" 5. CRUCIBULUM RAMOSA. Interior and exterior, natural size. Page 108. 



" 6. CRUCIBULUM DUMOSA. Interior and exterior, natural size. Page 109. 



" 7. CRUCIBULUM MULTILINEATA. Interior and exterior, natural size. Page 107. 



" 8. TROCHITA CENTRALIS. Interior and exterior, natural size. Page 100. 



" 9. CRYPTA FORNICATA. Exterior of shell, natural size. Page 110. 



" 10. CRYPTA SPINOSA. Exterior of shell, natural size. Page 111. 



" 11. CRYPTA COSTATA. Exterior of shell, natural size. Page 112. 



" 12. CRYPTA PLANA. Exterior of shell, natural size. Page 111. 



" 13. HIPPONIX BULLII. Side view to show carina. Page 112. 



" 13a. Outline of the aperture of H. Bullii. 



FISSURELLIDJE. 



Fig. 14. FISSURELLA REDIMICULA. Natural size. Page 113. 



N A T I C I T>M . 



Fig. 15. NATICA HEROS. Front and back view, natural size. Page 114. 



" 16. NATICA DUPLICATA. Front and back view, natural size. Page 114. 



" 17. NATICA CANRENA. Front view, natural size. Page 115. 



" 17a. Back view of same, natural size. 



" 18. NATICA CAROLINIANA. Front and back view, natural size. Page 116. 



