364 Frogs of the Okefinokee Swamp 



category, one 43 mm. June 24, 1921, and one 40 mm. July 5, 1921. On this 

 later date we secured one 40, 65, 69, 7 1 mm. respectively. We took two young 

 of 22 and 32 mm. from April 22-May 23, 1921, 14 young from 20-28 April- 

 August, 1921, two young 28, 32 mm. June 20, 1921, and one 33 mm. July 26, 

 192 1 — in other words 20-33 mm. in range. This gives a clue in April and 

 May of 192 1 of transformed frogs 20-33; others 40-43 mm.; others 56-62 

 mm.; others 65-72 mm., or in June and July, 1922, we took frogs 20.5 mm. 

 at transformation, others 59 and 60 mm., and others 61-77 mm. The growth 

 stages then seem 20-33 mm. at transformation; 33-43 mm. the first year's 

 growth; 43-52 mm.; 52-63 mm.; 64-77 mm. Possibly these four presumptive 

 years based on measurements of frogs taken at the same period should be 

 shortened to three years. 



FOOD 

 We have made no study of the food of the specimens we captured. 



ENEMIES 



In 19 1 2, the only enemy of which we had positive evidence is the moccasin. 

 One moccasin taken June 22, 19 12, had a two-thirds grown R. clamitans in its 

 stomach and another secured in June, 19 12, had a full grown frog. 



In 1922 an amusing episode reveals another unusual enemy. On June 27, 

 at Camp Pinckney (near Folkston), Ga., on the St. Mary's River were some 

 big ponds (formerly dug by Confederate Army to hide turpentine in barrels). 

 Here we found several green frogs. "I captured one and started for another 

 pond. Halfway I lost the frog and began to chase it but an old hen ran in and 

 seized it ahead of me. It ran off with the prey and ate it. The frog was two- 

 thirds grown." See ovulation (dangers) for discussion of water snake as an 

 enemy. 



AUTUMNAL DISAPPEARANCE 



Our latest record is for September 5, 1922. 



BIBLIOGRAPHY 



See General Bibliography under synonymy Boulenger, G. A. (Proc. Am. Acad. Arts & 



Science, LV, 1920, p. 425). 

 1914 See previous notes, A. H. Wright, 1914, Carnegie Inst. Publ. No. 197, pp. 70-76; 



1920, Rept. U. S. Bur. Fisheries, Doc. 888. 

 1914. Overton, Frank. Brooklyn Mus. Quarterly, March, 1914, p. 37. 



Rana grylio Stejneger 



(PI. Ill, Fig. 8; VIII, Fig. 4; XI, Figs. 5, 6; XIV, Fig. 5; XVI, Figs. 3, 6; XVII; XXXVL 

 Fig. 8; XXXVII; Text Figs. 1,15) 



COMMON NAMES 

 Southern Bull-frog. Joe Brown Frog. Pig-frog. Lake Frog. Bull Frog. 



RANGE 



Check list. Rana grylio Stejneger. "Range: Southern Mississippi to 

 to peninsular Florida. Type Locality: Bay St. Louis, Mississippi." — Stejneger 

 & Barbour (Check List, 19 17, p. 38). 



