380 Frogs of the Okefinokee Swamp 



transform. On June 19 we have a record of one transformation. Beside 

 the above notes from our Journal we have the following dates for transforma- 

 tion: May I, June 20, July 11, July 19. 



In 192 1 our dates extend from April 2 4- July 19. 



In 1922 on June 14 when we arrived at Ghesser Island, there were several 

 transformed frogs found. In the same place two weeks later we still found 

 transformation in process. 



Size. In 1920 we held "Some of the southern bullfrog tadpoles may 

 transform in the very last of May and the minimum size recorded is i 3/4 

 inches." The transformation size of our lone specimen of 19 12 measured 44 

 mm. At the same time May 30 we secured another specimen 53 mm. in 

 length of body. In 192 1 we have the following measurements: On April 24, 

 we have two transformed at 43 mm. (C. U. 266) and 51 mm. (C. U. 265). 

 On April 25, two were captured and measured 48 and 47 mm. respectively. 

 Another of April 25 measured 53 mm. but it is, however, past transformation. 

 On April 26 one (C. U. 213) measures 43 mm. One was captured May 6 but 

 is not at hand. Another (C. U. 291) found June 19 is 45 mm. 



Besides the above notes from our Journal we have the following specimens: 

 May I, two at 37 and 39 mm. respectively; June 15, one at 32 mm. trans- 

 forming but progress not completed; July 11, two at 38 and 47 mm. respec- 

 tively; and July 19 two at 41 and 43 mm. respectively. 



In 1922 we secured transformed individuals as follows: June 14, one at 49 

 mm., July 17 one at 42 mm. 



In general in 191 2 we have a 44 mm. specimen; in 192 1 specimens from 

 32-48 mm.; in 1922 specimens from 42-49 mm. The measurements of 32-49 

 mm. about represents the size at transformation, although we believe the 32 

 mm. rather small for a normal R. grylio transformation. This places this 

 species intermediate between the transformation size (28-38 mm., average 

 (Ithaca) 3.2 mm.) size of Rana damitans and the size (43-59 mm., average 

 53 mm. (Ithaca) of Rana catesbeiana. 



General remarks. When the hind legs are well formed the upper fringe is 

 generally gone and the upper lateral ridge of teeth also, but some of the lower 

 labial teeth may yet be retained. 



These young frogs after transformation stay in the same habitat as the 

 adults. We captured them by hand at night with flashlight amongst the 

 bonnets of cypress ponds. Occasionally they could be caught along the maiden 

 cane edges with a dip net and torch light. On July 7, 1922, we found many 

 of the young ones in the shade of the small wooded islets (houses) of the 

 prairies. They would start off with a startled cry as one approached and in 

 this respect reminded one of young Rana catesbeiana. 



On May 14, 192 1 , at 8 p.m. we found plenty of the young transformed frogs 

 and somewhat larger young frogs resting on the sphagnum mat or vegetation 

 of a cypress pond and caught several of them by hand. 



On July 17, 192 1, on Chesser Island we took a 40 mm. Rana grylio. Two 

 days later in the same place we caught a mature male R. virgatipes (vocal sacs 

 and thumb developed) of 43 mm. They looked very much alike but the fourth 



