2 20 Frogs of the Okefinokee Swamp 



In 192 1 these pairs of July 16-17 were captured in water from 3-12 inches 

 in depth. Their eggs hatch quickly and probably would not have been caught 

 by quick drying had they been laid naturally. Many eggs in small pools 

 might be caught except that ovulation usually comes at rainy periods. 



The eggs laid the night of July 16-17, 192 1, were mainly attached to 

 sticks. "The three pairs were put into containers; two pairs in the photo- 

 graphic jar; the other pair in a round collecting bottle, all the equipment we 

 had available. Into each we put one or two sticks. The eggs are strewn 

 along on the sticks as in Hyla crucifer. Two masses of the three complements 

 were somewhat like normal Pseudacris masses (like P. triseriata-feriarmn- 

 nigrita group) of western New York and Texas forms. The eggs themselves 

 look like those of Hijla crucifer. The viteilus is brown above and creamish or 

 yellowish on lower pole. Ten of the eggs are floating. Quite a few single eggs 

 on the bottom of the jars. Must lay submerged eggs attached to grass, fern 

 and other herbaceous stems. 



The next morning in this pond "in water 3-6 inches deep with dip net 

 discovered eggs which seemed Pseudacris ocularis eggs (like those in camp). 

 These eggs are harder than those of Acris.^^ 



Egg mass, egg description {See general account of eggs). The first eggs laid 

 in camp July 16-17, 192 1, were roughly measured. "The vitelli measured 

 from .6-.8 mm.; the outer envelope from 1.4-1.8 mm. With my lens I could 

 see no inner envelope. Egg reminds me of that of Hyla crucifer. Viteilus 

 brown and cream color." 



In 1923 (1923a, p. 406) we gave their "eggs laid singly." In 1923 (1923b, 

 p. 34) we write '^Pseudacris ocularis emit single eggs on the bottoms of ponds 

 and on vegetation." In 1924 we (1924, p. 376) place the eggs in the category 

 "envelope single. Envelope 1.2 to 2.0 mm. Viteilus 0.6-0.8 mm. Egg com- 

 plement, 100. — Pseudacris ocularis." 



Mrs. Wright's laboratory notes on 17-20 eggs are: Egg viteilus .8 mm. or 

 less; viteilus .6-8 mm.; viteilus mode .8 mm., average .75 mm.; viteilus brown 

 above, cream below; no inner envelope; envelope 1.2 -1.8 mm. in diameter; 

 envelope average 1.36, mode 1.4 mm. 



HATCHING PERIOD 



On the night of July 16 from 8-10 p.m. we found 3 or 4 mated pairs in a 

 pond on Chesser Island. Each pair laid eggs that evening. On July 18, we 

 have the note "The Chorophilus eggs laid night of July 16-17 hatching by 

 3 P.M. of the i8th. Fast work." This means a maximum of 42 hours if laid 

 soon after 10 p.m. or if not laid until 4 or 5 a.m. July 17, a maximum period 

 of 35 or 36 hours. These were in ordinary collecting bottles and petri dishes. 

 The temperatures for those days for surrounding stations were: minima 68°- 

 70°, average 72°; maxima 87°-92°, average 90°. The maxima probably were 

 very effective in the petri dishes. 



MATURE TADPOLE 



Color description from life {June 30, July 8, 1922). Dorsal color citrine 

 drab or deep oUve. Over the dorsum of the body are definitely scattered 



