lo Frogs of the Okefinokee Swamp 



and Hamp Mizzell, The Quarterman brothers, and other officials) and its 

 numerous employees we extend our heartfelt thanks for numerous kind- 

 nesses, courtesies, and assistance in our work. 



In 1922 we motored to the swamp from Ithaca and arrived June 11, This 

 year we chose Chesser Island on the eastern edge of the swamp to study the 

 surrounding region and less disturbed parts of the swamp. On August 2 to 7 

 we visited Billy's Island. We sought also to get more illustrations of the 

 breeding stages of life histories we worked out in 192 1 and fill in the gaps in 

 life histories of species not known. 



The party of 1922 consisted of Mrs. Anna Allen Wright, Messrs. F. Harper 

 and Miles D. Pirnie and myself. With a Ford we were able to operate from 

 Waycross to Jacksonville or from the island to mainland. 



In 192 1 and 1922 we added to our amphibian species of previous years 

 these species: 



Siren lacertina Pseudacris nigrita 



Pseudobranchus striatus Hyla squirella 



Ambystoma angulatum Rana aesopus 



Triturus viridescens dorsalis Rana heckscheri 



Scaphiopus holbrookii Rana virgatipes 



The frogs in this list are forms solely outside the swamp or mainly so. 



THE OKEFINOKEE REGION 



The region of this study is roughly the Okefinokee swamp. 



The Okefinokee region falls largely in the Sabalian and Lower Austral life 

 zones of Rehn and Hebbard (1916), or physiographic areas called Lower 

 Coastal and Upper Coastal by the same authors. It is in the Coastal plain 

 of the southeastern United States and very decidedly of the pine barren 

 region variously placed in Flat Pine Barrens, East Florida Flatwoods section 

 (Florida portion of region). In some interpretations it might fall into the 

 Gulf Strip of the Lower Austral or in some discussions be thought of as a 

 part of the northern portion of the range of some "Floridan forms." 



The swamp covers parts of Charlton, Ware, CHnch, Pierce, Camden, and 

 Brantley counties and extends into Florida if Bay Swamp be conceived as a 

 part of its area. We have done desultory collecting in Nassau and Baker 

 counties in Florida. In a previous discussion we have given its area as 660 

 square miles," 26 miles in greatest width and 39 miles in greatest depth. 

 Possibly these dimensions are somewhat larger than they are now known to 

 be. The chief effluent of the swamp is the Suwannee river. The St. Mary's 

 also drains some of the eastern part of the swamp. The tributaries or branches 

 on the east side of the swamp are mainly short and most of the larger creeks 

 are tributary to the St. Mary's river, while on the west side and north 

 many creeks of considerable length flow into the swamp and through it 

 eventually into the Suwannee. This swamp then makes of east Florida an 

 island, if one wishes so to term it. 



