Eggs laid on June 5 by the pair kept in the laboratory were hatching on
June 7, on the average approximately 48 hours from the time of laying.
By June 8 all the eggs had hatched and the tadpoles were active. On
August 28 and 29 thousands of newly metamorphosed young were in evidence
on wet soil at the pond margin; in some the head still was tadpolelike
and they had a vestige of the tail stump. These young were remarkably
uniform in size, 15 to 16 mm. (the smallest one found was 14-1/2 mm.)
and almost all of them had originated from eggs laid after heavy
precipitation, totalling 3.22 inches, in the first 36 hours of August.
Allowing one day for adults to reach the pond and spawn, and two days
more for eggs to hatch, the tadpole stage must have lasted approximately
24 days in this crop of young.
Wright and Wright (1949: 582) stated that the tadpoles metamorphosed
after 30 to 50 days, and that the newly metamorphosed frogs are 10 to 12
mm. in length. Length of time required for larval development probably
varies a great deal depending on the interaction of several factors such
as temperature and food supply.