264 Frogs of the Okefinokee Swamp 



versicolor) eggs. In each mass were 5-30 eggs. These packets were easily dis- 

 cernible because of the excessive amount of air bubbles in them. In a few 

 instances the masses were slightly beneath the surface an inch or more and 

 the eggs matted together in semi-ball-like fashion. Usually, however, the 

 film form of the tree toad complement obtains with this species. In addition 

 the color of the eggs (brown animal pole and cream or yellowish white vege- 

 tative pole) makes the resemblance more marked. A comparison of the eggs 

 taken in the field with the ovarian eggs of Hyla carolinensis satisfies the 

 authors that the identification is correct but it is yet circumstantial or pre- 

 sumptive." Now we know the presumptive evidence would be just as strong 

 or stronger for these masses being those of H. femoralis, yet we cannot forget 

 that in these transient pools of these same cultivated fields we found two 

 mated pairs of Hyla cinerea. Doubtless they could not lay normal masses in 

 shallow water as they do in deeper cypress ponds, prairies or lakes. 



On May 23, 1921, "from 2:30-5 p. m. we spent on Billy's Lake in a 'bon- 

 net' (waterlily) area where Billy's Lake turns into the run for Suwannee Canal. 

 Here we have heard a wonderful Hyla cinerea chorus. On the edge of a yellow 

 waterlily (Nuphar) leaf where a part of the edge was submerged was a mass 

 of H. cinerea eggs, 25 in all; in a water pocket where the petiole stem enters 

 the midrib of the leaf was another packet of 10 eggs. The first packet I saw 

 was on a bladderwort {Utricularia) stem. Another was wound around a 

 Nuphar petiole. In one bladderwort the eggs were amongst the leaves and 

 3-4 inches below the surface. Hard to distinguish the eggs and bladders at 

 times. Another mass attached to bladderwort leaves or floats. A little 

 farther on a mass amongst algae." 



The later records of 1921 are not presumptive. We had the camp eggs 

 laid May 18-19 to compare with these field-laid eggs of May 22-23. 



Egg description. Our field notes are as follows : Measurements of the eggs 

 laid in camp May 18-19, 1921, are: ".8 mm. vitellus; 2.8 mm. inner envelope; 

 3.6-4.0 mm. outer envelope. The animal pole is blackish, very sHghtly 

 brownish; the vegetative pole about as white as many frog's (Rana) eggs." 

 On June 4, 192 1, the following notes are made: "Eggs of Hyla cinerea are as 

 follows: vitellus i. 0-1.2 mm.; inner envelope 2.2 mm. or 2.4 mm. Animal 

 pole black or brownish black, darker than in Hyla femoralis, animal pole 

 almost white or cream color sometimes a slight yellowish tinge but not so 

 much as in Hyla femoralis. Outer envelope a part apparently of jelly ma- 

 terial and poorly defined." 



Mrs. Wright's laboratory examinations give the following measurements : 

 vitellus .8 mm.-i.6 mm. for 29 specimens, mode 1.2 mm., average 1.15 mm.; 

 inner envelope 2.0-3.4 mm., mode 2.4 mm., average 2.55 mm., outer en- 

 velope, 3.2-5.0 mm., mode 4.0 mm., average 3.8 mm. 



In 19 1 2 the count of the ripe eggs in one female gives 343 and in some of 

 the others where slightly more occur the complement certainly does not 

 exceed 500. In comparison with some of the other tree frogs it is a relatively 

 small complement for a frog 50-60 mm. long. Of course, the form is very 

 slender of body. 



