PLATE XLIX. 

 Fig. I. Cardium tceniopleura Dall; Yorktown Miocene; the greater part of the surface 



and ribs has been eroded but the fragment is figured to show the general 



form ; Ion. 28.0 mm. ; p. 1095. 

 Fig. 2. Cardium tceniopleura Dall ; part of three ribs enlarged to show the peculiar 



sculpture. 



Fig. 3. Cardium cedalium Dall; Caloosahatchie marls; Ion. 31.0 mm.; p. 1088. 

 Fig. 4. Abra triangulata Dall; Oligocene of Bowden, Jamaica; Ion. 6.25 mm.; p. 997. 

 Fig. 5. Tellina (Merisca) sclera Dall ; Oligocene of Bowden, Jamaica ; Ion. 4.2 mm. ; 



p. 1021. 



Fig. 6. Metis magnoliana Dall; Miocene of North Carolina; Ion. 71.0 mm.; p. 1042. 

 Fig. 7. Macoma Kelseyi Dall ; Pleistocene of California ; Ion. 86.0 mm. ; p. 1052. 

 Fig. 8. Cooperella Carpenteri Dall ; Miocene of Virginia ; Ion. 14.0 mm. ; p. 1063. 

 Fig. 9. Bornia plectopygia Dall ; Claibornian Eocene of Alabama ; Ion. 4.5 mm. ; p. 



1149. 

 Fig. 10. Bornia scintillata Dall ; Claibornian Eocene of Alabama ; Ion. 3.75 mm. ; p. 



1149. 

 Fig. ii. Crassatellites (Crassinella) tanicus Dall; Oligocene of Oak Grove, Florida; 



alt. 3.15 mm.; p. 1477. 

 Fig. 12. Crassatellites (Scambula) chipolanus Dall; Chipola, Florida, Oligocene; Ion. 



44.0 mm. ; p. 1472. 

 Fig. 13. Crassatellites (Scambula) jamaicensis Dall ; Oligocene of Bowden, Jamaica ; 



Ion. 49.0 mm. ; p. 1471. 



Fig. 14. Crassatellites (Crassinella) galvestonensis Harris; Miocene of Yorktown, Vir- 

 ginia ; alt. 5.2 mm. ; p. 1478. 

 Fig. 15. Crassatellites (Crassinella) lunulatus Conrad; Miocene of Duplin County, 



North Carolina ; alt. 6.0 mm. ; p. 1477. 

 Fig. 16. Crassatellites (Crassinella) triangulatus Dall; Oligocene of Alum Bluff, 



Florida ; alt. 3.3 mm. ; p. 1476. 





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