r the samples of
adults, but not for the juveniles, where in each instance the females
predominated. We cannot absolutely explain these differences in ratios.
Possibly the data on adults reflect different patterns of activity among
the sexes so that adult females are simply not present in numbers where
we looked for them. They could be located underground, in connection
with "incubating" duties; if this is true it would account for the fact
that so few egg-clusters have been found in logs.

Table 3.--Sex Ratios in Aneides hardii, Total Sample

===================================================
| Number | Number | Ratio of
Locality | of | of | males to
| males | females | females
---------------------+--------+---------+----------
Capitan Mountains | 35 | 31 | 100:87
Sierra Blanca | 28 | 21 | 100:75
Sacramentos, 1958 | 23 | 20 | 100:121
Sacramentos, '56-'57 | 34 | 43 | 100:126
+--------+---------+----------
All | 120 | 123 | 1:1
---------------------+--------+---------+----------

Table 4.--Sex Ratios in Aneides hardii, Adults

===================================================
| Number | Number | Ratio of
Locality | of | of | males to
| males | females | females
---------------------+--------+---------+----------
Capitan Mountains | 35 | 19 | 100:54
Sierra Blanca | 22 | 7 | 100:32
Sacramentos, 1958 | 15 | 14 | 100:93
Sacramentos, '56-'57 | 22 | 16 | 100:73
---------------------+--------+---------+----------

_Age-ratio_

The data in Table 5 show adult salamanders to outnumber young at each
collecting locality. This is probably not an accurate reflection of
actual age composition in this species. Yet, we obtained the same
general result in all three years of the study. We assume, therefore,
that young were located where we could not catch many of them; probably
they were underground. Sites of hatching and of the activities of early
life would thus occur where we think the bulk of eggs are laid.

Table 5.--Age Ratios, Adults-juveniles

======================================================
| Number | Number | Ratio of
Locality | of | of | adults to
| adults