lyo Frogs of the Okefinokee Swamp 



sounds like the jingling of small sleigh bells, for the musical element of its 

 call travels farther than the rattle. A chorus heard close by sounds like the 

 rattle of small pebbles poured upon a cement pavement. 



"An individual frog sings for from thirty to forty-five seconds at a time. 

 Its call has three phases. The first phase lasts for about five seconds and 

 sounds like the clicks of a boy's marble dropped upon a cement pavement 

 once or twice a second from a height of about six inches. The second phase 

 sounds like the galloping of a small pony on a brick pavement, or like the 

 clicks of a boy's marble dropped upon a pavement from a height of only an 

 inch or two, and allowed to bounce twice each time. The third phase sounds 

 like the regular cree-cree-creeing of a tree cricket, or like the rattle of a boy's 

 marble that bounces rapidly when it is dropped at frequent intervals from a 

 height of only half an inch. The time and rhythm of the sounds are about 

 the same as that of the following syllables pronounced with the speed of 

 ordinary reading; — "click, click, chck, click, . . . click-e-ty, cHck-e-ty, 

 click-e-ty, click-e-ty, click-e-ty, . . . cree, cree, cree, cree . . ." 



"The cricket frog inflates a vocal sac under its chin during its call. It often 

 sits quitely with its sac distended for many minutes between its calls. The 

 violent efforts of its body in producing its sound make the frog resemble 

 a small boy on his hands and knees blowing a fire with all his might. The vocal 

 sac is bright yellow and when it is seen distended in the day time, it is so con- 

 spicuous that it reveals many a singer that otherwise would be almost in- 

 visible on a lily pad." 



To us, on April i6, 192 1, at Raleigh, N. C. "Acris gryllus calls sound like a 

 rattle or some of the metal clickers." On April 25, 1921, in the Okefinokee 

 Swamp, we repeat "Acris call is a rattle," just as C. M. Barber, 1923, speaks 

 of the "rattle of Acris." On May 18 I have the following journal notes: 

 "Acris call. Tick, tick, tick, tick and so on. Or kick, kick, kick, kick, . . . 

 kick, kick . . . kick, kick, . . . kick, kick, . . . kick, kick, kick, kick, 

 kick, kick. One Acris went on calling for 45 seconds. Another kick, kick, 

 kick, kick, . . . kick, kick, . . . kick, kick, kick. Another 4 kicks pause, 

 then 7 kicks in succession. Another called for 30 seconds straight." To F. 

 Harper "its ordinary note is a simple rather strident gik, given either singly 

 or in irregular but successive series. 



Frequently one finds the males with inflated vocal sacs even when not 

 calHng. When calling the throat is never fully deflated. After a call it may 

 be swollen to three-quarters the full capacity. Thus when the call is given 

 the body sides are compressed and the vocal sac extended to its limit. 



Our voice records for 192 1 and 1922 follow: 



Apr. 15 



" 17 



" 21 



" 23 



" 24 



" 2 s 



I92I 



Raleigh, N. C. Males calling. 



Raleigh, N. C. Plenty calling in evening at Boone's Pond. 



Billy's Island, Okefinokee Swamp, Ga., Voice 5:00-12:00 p.m. 



Last night in early evening went after croaking Acris. 



Moonshine Pond. In Pond heard no end of Acris 7 :3o p.m. 



In Long Pond at 10 : 00 a.m. heard quite a few Acns caUingin Hylacinerea 



pond. In C. A. G. {cinerea, Acris, grylio) pond Acris common and calling. 



