PLATE XLV. 

 These figures are from camera lucida drawings of the type specimens by W. H. Dall. 



Fig. I. Erycina fabuliiw Dall; 5.0111111.; Oak Grove, Florida; Oligocene; p. 1145. 



Fig. 2. Bornia floridana Dall; 7.3 mm.; Oak Grove, Florida; Oligocene; p. 1150. 



Fig. 3. Erycina undosa Dall; 3.5 mm.; Chipolan Oligocene; p. 1144. 



Fig. 4. Hindsiclla carolinensis Dall; 5.5 mm.; Miocene of North Carolina; p. 1138. 



Fig. 5. Rochcfortia Stimpsoni Dall; 6.0 mm.; Miocene of North Carolina; p. 1160. 



Fig. 6. Montacuta petropolitana Dall; 5.75 mm.; Miocene of Petersburg, Virginia; 



P. II73- 



Fig. 7. Rochcfortia planulata Stimpson ; 4.1 mm.; Pliocene of Florida; p. 1161. 

 Fig. 8. Hindsiclla ncphritica Dall;. 4.75 mm.; Oligocene of Florida; p. 1137. 

 Fig. 9. Hindsiclla acuta Dall; 6.0 mm.; Miocene of North Carolina; p. 1138. 

 Fig. 10. Sportella petropolitana Dall ; 5.75 mm. ; Miocene of Petersburg, Virginia ; p. 



1130. 



Fig. II. Bornia rota Dall; 4.2 mm.; Miocene of North Carolina; p. 1151. 

 Fig. 12. Hindsiclla donacia Dall; 5.66 mm.; Claibornian ; p. 1136. 

 Fig. 13. Sportclla rccessa Glenn; 5.0 mm.; Miocene of Maryland; p. 1131. 

 Fig. 14. Erycina curtidcns Dall; 3.66 mm.; interior of right valve; Oligocene of 



Florida; p. 1145. 



Fig. 15. The same, showing hinge of a left valve; p. 1145. 



Fig. 16. Bornia dodona Dall; 5.25 mm.; Oligocene of Oak Grove, Florida; p. 1150. 

 Fig. 17. Erycina chipolana Dall; 4.1 mm.; Oligocene of Florida; p. 1144. 

 Fig. 18. Montacuta mariana Dall; 4.0 mm.; Miocene of Maryland; p. 1173. 

 Fig. 19. Erycina marylandica Glenn; 3.05 mm.; Miocene of Maryland; p. 1146. 

 Fig. 20. Anisodonta (Fulcrclla) Carolina Dall; 5.0 mm.; Miocene of North Carolina; 



P. H33. 



Fig. 21. Montacuta claiborniana Dall; 4.5 mm.; Eocene of Alabama; p. 1171. 

 Fig. 22. Erycina protracta Dall; 8.35 mm.; Pliocene of South Carolina; p. 1146. 

 Fig. 23. Dicranodesma calvertensis Glenn, interior of right valve ; 4.75 mm. ; Miocene 



of Maryland; p. 1157. 



Fig. 24. The same, interior of left valve; 4.75 mm.; p. 1157. 

 Fig. 25. Alvcinus rotundus Dall, interior of left valve; 1.9 mm.; Chipolan Oligocene, 



Florida; p. 1167. 

 Fig. 26. Diplodonta puncturclla Dall, interior of left valve and profile of teeth ; 6.0 mm. ; 



Oligocene of Bowden, Jamaica; p. 1183. 

 Fig. 27. Solecardia (S paniorinus) Cossmanni Dall, interior of right valve; 8.0 mm.; 



Miocene of Virginia; p. 1125. 

 Fig. 27a. The same, hinge of left valve; p. 1125. 

 Fig. 28. Alvcinus rotundus Dall, interior of right valve, showing hinge; 1.9 mm.; 



Chipolan Oligocene of Florida; p. 1167. 



I2OI 



