Hyla gratiosa 



301 



Calling loudly. 



Calling on Billy's Island. 



Heard at night at Fargo. 



Heard at night at Fargo. 



Big chorus near Moniac. 



More heard south of Moniac in Florida. 



1922 



North of Millen, Ga., large chorus. 



Near Screven, Ga., heard several. 



Chesser Island, Ga., no end of Hyla gratiosa calling. 



Several calling but not in chorus. 



Heard near Trader's Hill in grove of pines. 



A barker in a high pine. 



Camp Pincknej^ i or 2 barking frogs. 



Near Anna's Pond barking frog. Also near Starling Branch. 



Near Trader's Hill several in flooded fields. 



Heard a barker on Chesser Island. 



Spent an hour searching for a barker in pine tree. 



Barker calling in hammock. 



Calling 2:00 p. m. 



Heard i or 2 north end of Island about 9:00. Temperature 72°. 



Solved barker. It is H. gratiosa. Heard barking and normal notes 



in same pond. 



9:00 a. m. Air 84°. Plenty calling. 



Along Old Okefinokee Road several heard. 



One calling near Chesser School. 



None heard. 



Very few heard Folkston-Chesser Island, 9-10:30 p. m. 



Several calling in pines and ponds, 2-6:00 p. m. Croaking 7:15. 



Heard a few on Moniac-St. George-Chesser Island Road. 



In 192 1 on May 21 it rained almost continually; on May 22, we heard 

 our first H. gratiosa on Billy's Island. On June 4 we had a heavy downpour. 

 The following day we found three croaking in an overflowed corn field. On 

 July 3 after a week of rain it poured ; that evening four males began croaking. 

 On July 15, on Chesser Island a thunder storm came in the afternoon. That 

 evening the Florida tree frogs began a chorus. The following day, July 16, 

 another storm came and another congress came. On July 27 and 28 we 

 were flooded and the evening of July 29 the frogs began agan. 



Weather stations around the swamp. Rainfalls of 1.22, 1.78, i.oo, 1.47, 

 2.40, .91 inches respectively usually came before the croaking of this species in 

 192 1. The air minima are from 66-70°. The maxima are from 78-96°F. 

 Warm rains are the important factor. In 1922 when croaking records come 

 the lowest and highest minima are 62 and 83° and the lowest and highest 

 maxima 81 and 98°. Most minima are from 66-76°, the maxima 87-94°, 

 Most of the large choruses came after rains of 2.05, 2.00, 1.60, 1.35, 1.45 

 inches. The average of the minima is 70°, of the maxima 91°. In 1922 as in 

 192 1 high air temperatures and dampness produced choruses in midsummer. 

 Of the early spring we cannot speak. 



