PLATE LV. 



Fig. i. Anomalocardia chipolana Dall; Chipola Oligocene; Ion. 6.5 mm.; p. 1304. 

 Fig. 2. Chione (Chamelea) craspedonia Dall; Vicksburgian Oligocene, Vicksburg, 



Mississippi ; Ion. 28.0 mm. ; p. 1300. 

 Fig. 3. Subemarginula retiporosa Dall ; Pliocene marl of Shell Creek, Florida ; Ion. 



13.0 mm. ; see also Plate 60, Fig. 17. 

 Fig. 4. Transennella carolinensis Dall ; Miocene of Duplin County, North Carolina ; 



Ion. n.o mm.; p. 1242. 



Fig. 5. Chione erosa Dall ; Miocene of Florida ; Ion. 35.0 mm. ; p. 1290. 

 Fig. 6. Crepidula cesop Dall, dorsal view ; Pliocene marl of Shell Creek, Florida ; Ion. 



6.5 mm. ; p. 1610. 

 Fig. 7. The same, side view. 

 Fig. 8. Chione erosa Dall, internal view showing obsolescence of the pallial sinus ; 



Miocene of Florida; p. 1290. 

 Fig. 9. Chione (Chamelea) nuciformis Heilprin; Oligocene silex beds of Tampa, 



Florida ; Ion. 24.0 mm. ; p. 1300. 

 Fig. 10. Chione (Chamelea) rhodia Dall; Oligocene silex beds of Tampa, Florida; 



Ion. 18.0 mm.; p. 1301. 

 Fig. ii. Anomalocardia dupliniana Dall; Miocene of Duplin County, North Carolina; 



Ion. 5.0 mm. ; p. 1305. 



Fig. 12. Callocardia sincera Dall ; Chipola Oligocene ; Ion. 20.5 mm. ; p. 1260. 

 Fig. 13. Chione (Chamelea) spada Dall; Oligocene silex beds of Tampa, Florida; Ion. 



29.0 mm.; p. 1301. 

 Fig. 14. Anomalocardia floridana Conrad, dorsal view ; Tampa silex beds ; Ion. 38.0 



mm.; p. 1303. 



Fig. 15. The same, side view. 



Fig. 16. Cytherea (Artena) Shepardi Dall; Tampa silex beds; Ion. 21.0 mm.; p. 1278. 

 Fig. 17.' Chione (Lirophora) victoria Dall; Oligocene of Vicksburg, Mississippi; Ion. 



24.5 mm.; p. 1293. 

 Fig. 18. Chione (Lirophora) xesta Dall; Miocene of Alum Bluff, Florida; Ion 30.0 



mm. ; p. 1297. 

 Fig. 19. Pitaria calcanea Dall ; Oligocene of Vicksburg, Mississippi ; Ion. 17.0 mm. ; 



p. 1270. 



Fig. 20. Chione chipolana Dall; Chipola Oligocene; Ion. 32.0 mm.; p. 1290. 

 Fig. 21. Chione (Lirophora) glyptocyma Dall; Oak Grove sands; Ion. 33.0 mm.; 



p. 1296. 

 Fig. 22. Chione (Lirophora) Hendersoni Dall; Bowden marl of Jamaica, West Indies; 



Ion. 27.5 mm. ; p. 1295. 



Fig 23. Chione (Lirophora) ballista Dall ; Tampa silex beds ; Ion. 24.0 mm. ; p. 1295. 

 Fig. 24. Cytherea (Artenil glyptoconcha Dall; Tampa silex beds; Ion. 26.5 mm.; p. 



1277. 



1628 



