PLATE LII. 

 Fig. i. Phacoides (Bellucina) Tuomeyi Ball; from the Miocene of Duplin County, 



North Carolina ; Ion. 7.5 mm. ; p. 1385. 

 Fig. 2. Phacoides (Bellucina) waccamawensis Dall; from the Pliocene of the Wac- 



camaw district, South Carolina; Ion. 6.3 mm.; p. 1386. 

 Fig. 3. Phacoides (Bellucina) actinus Dall; from the Oligocene marl of Bowden, 



Jamaica ; Ion. 4.6 mm. ; p. 1385. 

 Fig. 4. Codakia (Jagonia) Vendryesi Dall; from the Oligocene marl of Bowden, 



Jamaica ; Ion. 7.5 mm. ; p. 1348. 

 Fig. 5. Myrtcea (Eulopia) vermiculata Dall; from the Oligocene marl of Bowden, 



Jamaica ; Ion. 7.5 mm. ; p. 1359. 

 Fig. 6. Phccoides (Parvilucina) piluliformis Dall ; from the Oligocene sand of Oak 



Grove, Florida ; Ion. 4.5 mm. ; p. 1382. 

 Fig. 7. Codakia (Jagonia) erosa Dall; from the Chipola Oligocene; Ion. 7.0 mm.; 



p. 1348. 

 Fig. 8. Phacoides (Parvilucina) prunus Dall ; from the Miocene of Plum Point, 



Maryland ; Ion. 7.0 mm. ; p. 1384. 

 Fig. 9. Codakia (Jagonia) chipolana Dall ; from the Chipola Oligocene ; Ion. 8.2 mm. ; 



? 1349- 



Fig. 10. Myrtaa limoniana Dall; from thi Oligocene marl of Bowden, Jamaica; Ion. 

 9.0 mm. ; p. 1358. 



Fig. ii. Phacoides (Cavilucina) recurrent Dall; from the Oligocene marl of Bowden, 

 Jamaica; Ion. 5.7 mm.; p. 1369. 



Fig. 12. Phacoides (Parvilucina) crenulatus Conrad ; from the upper Miocene of Suf- 

 folk, Virginia; Ion. 6.5 mm.; p. 1383. 



Fig. 13. Myrtcsa (Eulopia) furcata Dall ; from the Oligocene marl of Bowden, Jamaica ; 

 Ion. 13.0 mm. ; p. 1359. 



Fig. 14. Grateloupia alumensis Dall ; from the Oligocene horizon at Alum Bluff, Florida ; 

 Ion. 15.0 mm. ; p. 1239. 



Fig. 15. Phacoides (Parvilucina) sphceriolus Dall; from the Chipola, Florida, Oligo- 

 cene ; Ion. 4.25 mm. ; p. 1382. 



Fig. 16. Phacoides (Lucinisca) calhounensis Dall; from the Chipola, Florida, Oligo- 

 cene; Ion. 10.0 mm.; p. 1371. 



Fig. 17. Codakia (Jagonia) magnoliana Dall; from the Miocene of Magnolia, Duplin 

 County, North Carolina; Ion. 11.5 mm.; p. 1349. 



Fig. 18. Cyclinella gatunensis Dall; from the Oligocene beds at Gatun, Panama; Ion. 

 43.0 mm.; p. 1285. 



Fig. 19. Codakia spinulosa Dall; from the Oligocene marl of Bowden, Jamaica; Ion. 

 29.0 mm. ; p. 1346. 



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