130 Frogs of the Okefinokee Swa7np 



When we entered the swamp in 191 2, May 28, we picked up at Mixon's 

 Ferry, Suwannee River, the following: i at 15 mm.; 4 at 16 mm.; i at 16.5 

 mm.; i at 17 mm.; 3 at 17.5 mm.; 2 at 18 mm.; 2 at 18.5 mm.; 2 at 19.5 mm.; 

 I at 20 mm., probably one age group. Shortly after we arrived in 192 1 we 

 secured May i, 192 1, two 16, 16.5 mm. and one 25.5 mm. 9 . Certainly two 

 groups. It would seem as if these May and early June (to June 12 or 15) 

 records from 11-20 mm. are toads which wintered over and are i year beyond 

 transformation. At times it seems as if this group might be broken from the 2 

 year olds at 18 mm., but some of the 19-20 or 21 mm. are doubtful. Almost 

 all our material is determinable as to sex from 19 mm. onward for males and 

 from 20.5 or 21 or 22 mm. for females. Possibly the one year olds — if males to 

 be are 11-18 mm., and if females to be 11-20 or 21 mm. 



We have collections on which we take a 17 mm. unsexed specimen and 

 four from 24-28 mm. sex determinable or a 18 mm. unsexed— apparently two 

 clear cut groups. But on June 10, 192 1, we took specimens, an 18 mm. 

 unsexed and 19.5, 20 and 20.5 mm. males or June i, 192 1, two unsexed 16.5 

 and 18 mm. and three sexed individuals 19 mm. cf , 21.5 mm. 9 and 22 mm. 

 9 . Almost certainly as determined in previous paragraph the 16-18 mm. 

 immature forms and mature group 19-22 mm. (sex revealed externally) are 

 two groups. 



Most of our big series are as follows : 



June 16, 1922 9 from 20.5 mm. 9-26.5 mm. 9 



14 from 24.5 mm. cf-27.5 mm. cf 



July 3, 192 1 7 from 23. mm. cf-26.5 mm. 9 



1922 9 from 22. mm. 0^^26.5 mm. cf 



Because of records such as these one might think 28-32 mm. individuals 3 

 year olds but the evidence is slender. For example, on May 25, 192 1, we take 

 together a 19 mm.cf and two females 28 mm. and 29.5 mm. or June 4, 192 1, a 

 male 26 mm. and a female 30.5 mm., or July 12, 1922, two 26 mm. d^s, 26.5 

 mm.. 9 and one 30 mm. 9 , or June 30, 1922, two 19 mm. cf s, two 25 mm. 

 9 s and 26 mm. cT and one 28 mm. cf , or July i, 1922, a male 24 mm. and one 

 male 29 mm. 



In conclusion we hold transformation to come at 7-8 mm., a mean at 7.5 

 mm.; one year old stage 10.5 or 11 mm.-i8 or 19 or 20 mm., or mean at 16.5 

 mm.; two year olds, 19 cf or 21 9-27.5 or 28 mm. (possibly to 30 or 32 mm.), 

 mean at 25 mm. There may be a three year old class from 27.5 or 28 mm.- 

 32 mm., with mean 29 mm., but this is not quite so certain. 



FOOD 



For this topic consult Dr. R. Kellogg's forthcoming economic studies of 

 Bufos. He examined our series and found some very interesting things in its 

 diet. Professors C. R. Crosby and S. C. Bishop in examining some of Dr. 

 Kellogg's oak toad material thought so highly of the oak toad as an insect 

 collector that they entitled one paper thus, "A New Genus and two new 

 Species of Spiders Collected by Bufo quercicus (Holbrook)." 



