PLATE XLIX. 

 Fig. I. Cardium taniopleura 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 wdaiium Dall; Caloosahatchie marls; Ion. 31.0 mm.; p. 1088. 

 Fig. 4. Abra triangulata TiM ; 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 KelseyiDzll; Pleistocene of California ; Ion. 86.0 mm. ; p. 1052. 

 Fig. 8. Coopej-ella Carpenteri DblW; Miocene of Virginia; Ion. 14.0 mm. ; p. 1063. 

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



1 149. 

 Fig. ID. Bornia scinfillata Dall ; Claibornian Eocene of Alabama ; Ion. 3.7s mm. ; p. 



1 149. 

 Fig. II. Crassatellites {Crassinella) tanicus Dall; Oligocene of Oak Grove, Florida; 



alt. 3. IS 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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