1 44 Frogs of the Okefinokee Swamp 



f . The females usually have the head crests larger, thicker and more 

 raised but this does not always obtain. 

 An examination of our and other collections reveal the following differ- 

 ence or notes: 



a. The range of 84 males is 42-68 mm., one 82 mm., average 55 mm., 

 mean 55 mm. 



b. The range of 136 females is 44-88 mm., average 63 mm., mean 

 62 mm. 



c. Usually the females have throat like rest of ymderparts and the 

 males have it discolored but some large females have throat clouded 

 (e.g., a 64 mm. 9 ) very clouded (e.g., a 76 mm. 9 ) or a male may 

 have throat quite light in color. 



d. We have given 42-50 mm. as within the range of adult males. 

 As a matter of fact these have no excrescences on fingers or very 

 slight ones, but most of these have fully or partially discolored 

 throats. At about 54 mm. a male is sure to have excrescences and 

 discolored throat. 



e. The heavy spotting in pectoral region may be in either sex or both. 

 The one median pectoral spot (like that of Bufo fowleri) occasion- 

 ally appears and may be in either sex, 



f. Sometimes in the external recognition of sexes in the debatable 

 sizes of 42-49 mm. the higher or larger cranial crests in the females 

 help in the determination. 



Duration. Usually the amplexation may last only an hour or so; if the 

 female be not ripe it may extend for days. Often the mated pairs in camp 

 might not lay the first night of capture. For example, "on July 2, 1922, at 

 Starling Branch Crossing 8:30 p. m. to midnight took one pair. Brought it 

 to camp. It did not lay on the night on July 2-3 and yet another taken at 

 same place July 3 from 8:00 p. m. to i :oo a. m., July 4, laid between i :oo- 

 7 :oo a. m., July 4, or 0-7 hours later." 



On April 24, 192 1, two of the pairs were not broken by the next morning. 

 On May 2, we have a note about these that "the two toad pairs collected 

 April 23-24 are now broken," or 7 or 8 days later. On June 7 we have the 

 note that a pair "Have remained in embrace June 7 from night of June 4. 

 (Let them remain until June 9 when we forcibly broke them) "Or 5 days' 

 duration. Or on July 1 1 "at the second dreen (Chesser Id.) we found a mated 

 pair. . . Brought it into camp. . . . Temperature 70°. July 12. The 

 pair has not yet laid. July 16. The pair of July 11 fixed July 14." 



C. S. Brimley in his notes on North Carolina Herpetology (Copeia, 1923, 

 p. 4) writes "Southern Toad {Bufo terrestris) found common at Laurel Hill, 

 Scotland Co., June i and 2, 1922. On June 2 a number were found breeding 

 on the edge of a roadside pool, and the following facts noted. The unmated 

 male toads at nine in the morning were screaming loudly on the edge of the 

 pool, but had not entered the water, while at noon they were in the water and 

 mated, but almost silent." 



