General Discussion 



57 



Table 17 



There are many discrepancies in this table. Of the first four species which 

 winter over we collected few transformed individuals. The earliest we reached 

 the swamp was April 24. All may begin to transform earlier than the table 

 shows. Doubtless the bulk of their transformation comes before the bulk of 

 transformation for the first five breeders of the spring, i. e. the February to 

 March 10 beginners. From Acris gryllus onward to the end of the table the 

 spawning order seems to have little relation to transformation dates. This is 

 more from insufficient data than anything else. In the table the least signifi- 

 cant item is the average date. In some cases it means little. From Acris 

 gryllus onward our transformation data come all from June i onward with one 

 exception and all average dates are in July whereas the first early breeders 

 have transformation from April i onward and averages in June or earlier. 



If a composite curve were made of the 2 1 curves of transformation-sizes, 

 we would have a continuous record of sizes from 6 to 59 mm. The transforma- 

 tion sizes fall into four groups of sizes. (Table 1 8) The first group of 6-1 2 mm. 

 in size, (average 8-11, mode 7 to 11 mm.) comprises 6 species of four families: 

 The toads ( 5 w/omdae), namely oak toad and southern toad; two swamp cricket 

 frogs or chorus frogs {Pseudacris of Hylidae), little chorus frog, black cricket 

 frog; the narrow mouthed toad (Brevicipitidae), and the solitary spade-foot 

 iScaphiopodidae). The second group of seven species are from 9-23 mm. in 

 range, 12-20 mm. in average size, and 12 to 20 mm. in modal size. They are 

 all the remaining tree frogs ( Hylidae) . The third group of four species com- 



