Hyla versicolor 329 



Pond No. 5. She was perched side wise on the trunk and 3 feet or more farther 

 up was a male. In Pond No. 5 took an adult Hyla versicolor. These males 

 seem more marked and barred on hind legs than our northern tree toad and 

 more orange appears on the groin and hind legs." 



On August 13 tardy breeders in Spanish Creek woods were calling loudly 

 and almost in chorus. 



On our way from Ithaca to Okefinokee we heard it from Pennsylvania to 

 Georgia June 2- June 12, 1922. 



A resume of our few records of calling in 192 1 and 1922 follows: 



1921 

 August 8. 10 miles south of Moniac. Heard this species. 

 August 16. Several calling at Camp Pinckney. 



1922 

 Several calling during the rain. 

 Several calling when rain threatened. 

 Thompson's Landing. Heard in the woods. 

 Heard in Spanish Creek Woods. 

 Heard near Trader's Hill two H. versicolor. 

 Several calling 1-3, more 8:30-10 p. m. 

 Several calling along Folkston-Chesser Road-Spanish Creek Woods. 



At the nearby U. S. Weather Bureau Stations the temperatures were 

 maxima 8i°-96°, average 91°, minima 6 2 "-7 6°, average 70°. None of our 

 temperatures from 6:00 a.m. to 9:00 p.m. or sometimes midnight were below 

 71° for these periods of calling. As every one knows it calls most frequently 

 before, during and after rains. 



MATING 



Female. "Under parts entirely white, whiter than in the males. Other- 

 wise the same." 



Structural differences. The males average slightly smaller. In several 

 pairs taken we have these measurements: Tallulah Falls, Ga., June 22, 1909, 

 cf 44 mm., 9 45 mm.; Camp Pinckney, Ga., Aug. 12, 1922, cf 45 mm., 

 9 53 mm.; Ithaca, N. Y., June i, 1906, 6^ 46 mm., 9 50 mm.; Ithaca, N. Y., 

 June 14, 1907, cf 46 mm., 9 50 mm.; Ithaca, N. Y., June 10, 1907, cf 48 

 mm., 9 59 mm. 



The males have the dark vocal sacs. The underparts of the female are 

 pure white, rarely so in the male. There is little of difference in fingers or 

 tympana in the two sexes. Probably two-year-olds begin breeding. A male 

 30 mm. has a dark throat. 



Duration. Mating takes place largely at night and a pair mated at night 

 usually lays the same evening as mated. 



Amplexation. In this species the embrace is axillary. On August 11, 

 1922, 8 :3o-io:oo p.m. "at Camp Pinckney we took several males. Two males 

 were put together, embraced and continued thus for several hours. It was an 

 axillary amplexation. In this pair the upper male was much lighter, the lower 

 one much darker." 



