PLATE LX. 



Fig. i. Teinostoma (Climacia) calliglyptum Ball, basal view; Pliocene marl of Shell 



Creek, Florida; diam. 3.0 mm. 

 Fig. 2. The same, in profile. 

 Fig. 3. The same, from above. 

 Fig. 4. Macromphalina (Gyrodisca~) duplinensis Ball; Miocene of Buplin County, 



North Carolina ; diam. 3.6 mm. ; Proc. U. S. Nat. Mus., xviii., p. 45, 1895. 

 Fig. 5. Neritina (Smaragdia) merida Ball ; Pliocene marl of Shell Creek, Florida ; alt. 



4.5 mm. 

 Fig. 6. Umbonium (S olariorbis} ftoridanum Ball, basal view; Pliocene marl of the 



Caloosahatchie, Florida; diam. 1.6 mm.; Proc. U. S. Nat. Mus., xviii., 



p. 45, 1895. 



Fig. 7. The same, in profile. 

 Fig. 8. Umbonium (S olariorbis} duplinense Ball, from above; Miocene of Buplin 



County, North Carolina; diam. 2.0 mm.; Proc. U. S. Nat. Mus., xviii., 



p. 46, 1895. 



Fig. 9. The same, basal view. 

 Fig. 10. The same, in profile. 

 Fig. ii. Umbonium (S olariorbis} undula Ball, basal view; Miocene of Buplin County, 



North Carolina ; diam. 2.5 mm. ; Proc. U. S. Nat. Mus., xviii., p. 46, 1895. 

 Fig. 12. The same, in profile. 



Fig. 13. Cythara metria Ball; Pliocene marl of Shell Creek, Florida; alt. 7.5 mm. 

 Fig. 14. Aspella senex Ball; Pliocene marl of Shell Creek, Florida; alt. 9.5 mm. 

 Fig. 15. Glyphostoma scoptes Ball; Pliocene marl of Shell Creek, Florida; alt. 12.5 



mm. 

 Fig. 16. Cythara micromeris Ball ; Pliocene marl of Shell Creek, Florida ; alt. 5.2 



mm. 

 Fig. 17. Subemarginula retiporosa Ball, in profile; Pliocene marl of Shell Creek, 



Florida ; Ion. 13.0 mm. ; see also Plate LV., Fig. 3. 

 1 Fig. 18. Solenosteira Vaughani Ball ; Miocene of Coe's Mill Run, Florida ; alt. 32.0 



mm. 



Fig. 19. Neverita coensis Ball ; Miocene of Coe's Mill Run, Florida ; alt. 34.0 mm. 

 Fig. 20. Pterorhytis (Conradiana Ball, var. ?) fluviana Ball, apical view, showing 



varices ; Pliocene of Shell Creek, Florida. 

 Fig. 21. The same, front view; alt. 34.0 mm. 

 Fig.^22. Conus demiurgus Ball, young shell; Chipola Oligocene; alt. 38.0 mm.; Proc. 



U. S. Nat. Mus., xviii., p. 43, 1895. 

 Fig. 23. Conus chipolanus Ball; Chipola Oligocene; alt. 32.0 mm.; Proc. U. S. Nat. 



Mus., xviii., p. 42, 1895. 

 Fig. 24. Ringicula semilimata Ball ; Chipola Oligocene ; alt. 2.0 mm. ; Proc. U. S. Nat. 



Mus., xviii., p. 24, 1895. 

 Fig. 25. Tornatina Fischeri Ball; Chipola Oligocene; alt. 2.5 mm.; Proc. U. S. Nat. 



Mus., xviii., p. 26, 1895. 

 Fig. 26. Conus isomitratus Ball; Chipola Oligocene; alt. 28.0 mm.; Proc. U. S. Nat. 



Mus., xviii., p. 43, 1895. 

 Fig. 27. Conus sulculus Ball ; Chipola Oligocene ; alt. 38.0 mm. ; Proc. U. S. Nat. Mus., 



xviii., p. 43, 1895. 



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