PLATE XXX. 



Fig. i. Spisula duplinensis Dall, interior of right valve ; Miocene, Duplin County, 



North Carolina; Ion. 58 mm. ; p. 898. 



Fig. 2. Modialus graintitatus Dall ; Ballast Point silex beds; Ion. 20 mm. ; p. 794. 

 Fig. 3. Lima smirna Dall; Oligocene ; Ballast Point silex beds; alt. 31 mm. ; p. 766. 

 Fig. 4. Ostrea falco Dall, inner face of upper valve; Zeuglodon bed; alt. 55 mm.; 



p. 682. 

 Fig. 5. Ostrea podagrina Dall ; Oligocene of Suwanee River, Florida; interior of upper 



valve ; alt. 1 10 mm. ; p. 682. 

 Fig. 6. The same, external view ; p. 682. 



Fig. 7. Tellina dodona Dall ; Oligocene, Oak Grove marl ; Ion. 16 mm. 

 Frg. 8. Pododesmus scope/us Dall ; Rock Bluff marl ; inner face of attached valve ; lat. 



57 mm. ; p. 779. 



Fig. 9. Mytilits pandionis Dall ; umbonal view ; p. 787. 

 Fig. 10. Mytiltts pandionis Dall; White Beach, Osprey, Florida; internal cast of right 



valve ; Ion. 122 mm. ; p. 787. 

 Fig. II. Ostrea falco Dall; alt. 55 mm. ; external view; p. 682. 



925 



