1 86 Frogs of the Okefinokee Sivamp 



i3-5> 13-5) 13-5) 14, 14-5 and 14.5 mm. On July 18 on the prairies we secured 

 three transformed frogs 12, 13, 13 (tail 6 mm.) mm. On July 28 we have 

 transformed individuals 11, 11, 11, 11. 5, 12, 12.5 mm. The last has forelegs 

 just through the skin and the tail 21 mm. long. Finally on Aug. 4, 1922, we 

 secured two transforming frogs 13.5 (stub 3 mm.) and 14 (stub 15 mm., al- 

 most transformed frog mouth) mm. 



There are 51 specimens in 191 2, 192 1 and 1922 at transformation or 

 just before. They range from 10-15 mm., 6 at 10 mm. and 2 at 13.5 mm., i at 

 14 mm., and i at 15 mm. The average is 13 mm. and so is the mode. Thirty- 

 one of the 51 are 12 mm. or less. We also had 26 debatable stages on individ- 

 uals possibly beyond transformation. These ranged from 13 mm.-i4.5 mm., 8 

 at 13 mm., 8 at 13.5 mm., 4 at 14 mm., and 4 at 14.5 mm., or averaging 

 13.5 mm. 



The transformation size usually ranges from 10- 12.5, rarely to 15 mm. 

 or rarely below 10 to 9 mm. Inasmuch as some tadpoles grow to large sizes 

 before transformation the larval period must be variable. Furthermore, it is 

 remarkable to have transformation at 14 or 15 mm. when one male has only 

 a measurement of 15 mm., and several are clearly males at 17 if not 16 mm. 

 In other words this species apparently at times almost transforms into 

 mature breeding frogs. 



General remarks. Abbott (1882, pp. 708, 709) in New Jersey records that 

 "Late in August these tadpoles have become fully developed peepers. Even 

 then they were very rare during that summer (I suppose this is always the 

 case) but in September many were found in damp places, never in the water, 

 but always near a running brook, or a spring. By the middle of September a 

 marked increase in their numbers was noticed; but their haunts were different. 

 I found very few in the meadows, but many in damp places, as spring holes, 

 in the adjacent woodland, and particularly along a brook where the water 

 flows rapidly over a rocky bed. 



"It was here I closed my field studies of these batrachians. Early in Octo- 

 ber I found a number of these 'peepers' in a little ravine, through which the 

 above mentioned brook passes. I noticed at this time, that these little 

 creatures had a decided aversion to the water. Necessary as it was for them 

 to keep their skins moist, they had no desire to become thoroughly wetted, 

 and when by chance they made an unlucky jump and settled in the water, 

 they straightway crawled out and took up a high and dry position on some 

 projecting stone. If in the sunlight, so much the better. A bath seemed to 

 chill them, and whenever I drove one into the water, I found that for several 

 minutes after it emerged I could pick it up without difficulty; but in time 

 it would regain its ordinary activity, and then quick indeed must be one's 

 movements who would catch them with the hand alone." 



In 191 2 and in the first month of 192 1 our mistaken field identification 

 of the tadpole made our transformation evidence for these periods too con- 

 fusing and uncertain to insert here. 



In 192 1, June 3, in one pond "Found on lily pads and other surface 

 vegetation what I at first took for Pseudacris ocularis. The second specimen 



