Hyla femoralis 291 



frogs, or 33-35 days afterwards. This, however, is insufficient evidence. In 

 192 1, the first spent females were taken April 25, the first positive ovulation 

 began May 21 and first transformations came June 16, June 21, July 24 and 

 July 26. This would give us roughly 52, 57, 90, 92 days from first spent female 

 to transformation dates (June 16- July 26) or 26, 31, 64,66 days from first 

 positive eggs to transformation dates. In 1922 the first spent female taken 

 was July 3 and first gravid females June 29, our latest transformations 

 August 4, 9, 13. These ranges give us 36, 41, 45, 32, 35, 41 days. Possibly all 

 these transformations are from eggs before June 29. We doubt if the larval 

 period be shorter than 30 days, and 90 days seems too long. Doubtless 40-70 

 days are not far from the range. 



TRANSFORMATION 



Period. In 192 1 our first records of transformation came June 16, July 23, 

 July 24 and July 26. In 1922 we have transformations June 16, June 21, 

 June 26, June 27, June 30, July 11, July 12, July 19, July 26, July 27, 

 August 4, August 9 and August 13. We have outlined actual transformations 

 from June 16- August 13. The eggs laid August 17, 1922, must transform as 

 late as October. 



Size. On July 2, 19 12 we took on Camp Island a specimen which measured 

 13 mm. On July 24, 1921, on Billy's Island, in Indian Mound Ponds we took 

 nineteen individuals 11. 5-1 5 mm. in size. On July 26 we secured three more 

 13-14 mm. in size. In 1922 we secured two specimens at Callahan, Fla., June 

 16, 1922, 14 mm. and 15 mm. In the Okefinokee Swamp in 1922 we secured 

 31 transformed individuals, 10 mm. -14 mm. in size. In all we measured 57 

 individuals with a range of size 10-15 rnm- The major mode was 13 mm. (15 

 specimens) and two secondary modes of 12 mm. (12 specimens) and 14 mm. 

 (12 specimens), and the average of the 57 specimens was 13 mm. 



In 1928 we discovered several tadpoles labelled Acris which are really Hyla 

 femoralis. One lot, June 16, 1928 is a transforming series. 



m. 4 legs. Tadpole mouth. 

 ' " " Teeth rows gone. 

 " " Tadpole mouth 

 half changed. 

 " ii.o " " 14.5 " " " Tadpole mouth no 



teeth. 



On July 23, 192 1 we find tadpoles and 4 transformed frogs and beyond, one 

 II. 5 mm., 12 mm., 13 mm., and 14 mm. 



General remarks. At transformation many of the tree toad species tend to 

 be green with none of their distinctive markings. In the first identification of 

 these forms the tails of the series not fully transformed often helped materially. 

 Adults of Hyla femoralis are not often green (sometimes so) but their trans- 

 formed life frequently starts with a green livery. They are then hard to 

 separate from Hyla squirella, Hijla cinerea, etc. On July 18, 1922, "around 

 the edge of a sphagnum bog overgrown with bushes and trees we found trans- 



