Hyla cinerea 261 



marized is: 28 females from 41-63 mm. in length, average 53 mm., mode 57; 

 53 males from 37-59 mm. in length, average 50 mm., mode 55 mm. The 

 males and females may begin breeding rarely at the end of their second year 

 but the rate of growth and ripening of gonads point to the beginning of the 

 third year and third spring after transformation as the first ovulation for the 

 individual frogs. 



Duration, day or night. The first record we have is on the evening of May 

 10, 1921. "This evening at 8:00 p. m. (Temperature 72°) went to new pond 

 southwest of boys' swimming hole in Billy's Lake. Here were no end oi Acris 

 gryllus and Rana grylio in all stages. Easy to capture them at night except 

 the adult R. grylio but even these can be taken. The pond is cypress-lined. 

 Moon shows just above them. Beautiful picture though some might think of 

 the moccasins, alligators, etc. when wading around at night. Heard a Hyla 

 cinerea nearby. Began to search. It stopped. Later thought I saw it. 

 Seized it and it proved a ripe female, not croaker. This female was in a 

 cypress 4 feet above the water. Went away. Later the croaker started 

 again. On the flat side of an iris leaf three feet from the captured female was 

 the male. Was the female approaching the croaker? Put both in a jar. 

 Came back to camp. The male and female are mated at 9:00 p. m." On the 

 morning of May 1 1 the pair were broken and no eggs laid. 



On the night of July 3, 192 1, after a heavy rain we found two mated pairs 

 of Hyla cinerea not in their accustomed place of ovulation. In the water 

 between the furrows of sweet potatoes found one of the pairs. The other 

 was in another cultivated field between furrows of cane or corn. Biifo quer- 

 cicus and Hyla jemoralis pairs were also in numbers. 



On July 7, another pair was found in a temporary open grassy pool near 

 the lumber company's wood pile, quite an aberrant place for ovulation. 

 Equally so was the temporary pool in the street of the Billy Island Lumber 

 Camp where on June 4, 192 1, a pair was found. 



As to duration of embrace we have httle evidence. Normally they lay the 

 same night a pair is captured. The pair of May 10 were broken the morning 

 of May II. On the night of May 14 these were mated again and then alter- 

 nately broke and embraced for several days after without ovulation. 



Amplexation (Normal, abnormal). The pair mated May 10, 192 1, had 

 an axillary embrace. "The bent toe pads of two fingers (outer ones) of the 

 male show slightly." On May 11 they broke. On the night of May 14 "The 

 male held the female with his forelegs in front of the female's forelegs. One 

 arm came to the middle line of the female's throat and the other arm came to 

 the corner of her mouth. Later the male embraced normally." 



On May 14, 192 1, brought in many males. Put them together and two 

 were soon mated in an axillary fashion. The embrace was not strong for 

 they broke when we tried to flashhght them. 



On May 18, 1921, "at 9:30 p. m. in Long Pond on moss edge, not in pond 

 proper we found a mated pair of Hyla cinerea. Apparently the females are 

 often met at the very pond's edge. They broke. Put them in photo jar. 



