CONTEiNTS 



Family Thraciid^ 1522 



Family Periplomatidj! 1528 



Family Anatinid^ 1530 



Family Pholadomyacid/E 1531 



Class Beachiopoda. 



Family Discinid^ 1534 



Family Rhynchonellid^ 1535 



Family Terebratulid^ : 1535 



Family Terebratellid.s; 1 539 



Discussion of the Geology. 



Introductory 1541 



The Vicksbueg Limestone 1553 



The Shell Bluff Group 1555 



The Ocala Limestone 1556 



The Chattahoochee Group 1558 



The Tampa Silex Beds 1564 



White Beach, Little Sarasota Bay 1568 



The Tampa Limestone, or Orbitolite Bed 1570 



The Jacksonboro' White Limestone iS73 



The Chipola Beds i574 



The' Bowden Marl 1580 



The Oak Grove Sands 158S 



The Shiloh Marls 1592 



The Floridian Miocene iS94 



The Duplin Miocene iSQS 



The Caloosahatchie Beds 1603 



The Pliocene of the Carolinas 1614 



The Pleistocene of North Creek 1615 



Table i. Statistics of the Fossil Mollusk-Faunas 1617 



Table 2. Rise, Culmination, and Decline of the Florida Neocene Mollusk- 

 Faunas 1619 



Explanation of Plates ' 1621-34 



Index 1635 



Additions and Corrections 1653 



Final Note i6S4 



