small when they emerge in spring. The
smallest one found was 19 mm. long (May 19, 1951), and in each year
except 1954 many such young were found that were less than 25 mm. in
length in May or early June. None of the frogs marked at or near
metamorphosing size has been recaptured, but the trend of early growth
is well shown by Table 2 and Fig. 3. However, many juveniles that were
captured and marked within a few weeks of metamorphosis were recaptured
as adults. The selected individuals in Table 3 are considered typical of
growth from "half-grown" to small adult size. Growth in many other
individuals is shown in Figs. 6 and 7.

TABLE 3. GROWTH IN FROGS MARKED AS YOUNG AND RECAPTURED AS SMALL ADULTS.

==============================================================
Individual | Dates | Length | Probable time
and sex | of capture | in mm. |of metamorphosis
-----------------+-----------------+---------+----------------
No. 1 [Female] | August 28, 1951 | 21.5 |Mid-July, 1951
| May 5, 1952 | 23 |
| July 3, 1952 | 32 |
| August 31, 1952 | 33 |
-----------------+-----------------+---------+----------------
No. 2 [Female] | June 8, 1950 | 25 |Late July, 1949
| May 24, 1951 | 31 |
| July 30, 1951 | 34 |
| June 24, 1952 | 35 |
-----------------+-----------------+---------+----------------
No. 3 [Male] | August 31, 1951 | 24 |Late June, 1951
| May 23, 1953 | 32 |
==============================================================

[Illustration: FIG. 5. Ant-eating frogs, a little less than twice
natural size, adult and newly metamorphosed young, showing differences
in size and coloration. The young is darker and has a leaflike middorsal
mark which fades as growth proceeds.]

The trend of growth after attainment of minimum adult size is also well
shown by the records of marked individuals recaptured. Many of these
were marked while they were still small so that their approximate ages
are known. For those recaptured in their second year, after one
hibernation, length averaged 30.92 mm. Some of this group were young
metamorphosed late the preceding summer and still far short of adult
size (as small as 23 mm.) when recaptured. Others were relatively large,
up to 33 mm. A group of