toes; bilobate vocal sac; and large
prepollex bearing horny nuptial spinules. Although at present no
evidence for intergradation exists, the population described here is
considered to be a subspecies of _Hyla pseudopuma_.

The two subspecies exhibit few differences in size and proportions,
except that the tympanum is larger in _pseudopuma_ (Table 1). _Hyla p.
pseudopuma_ has dark brown or yellowish tan thighs and brown flanks with
a few creamy white spots; the groin in some specimens is pale blue. The
red color on the limbs characteristic of _infucata_ is lacking in
_pseudopuma_, which also lacks the white stripe above the anus
characteristic of _infucata_. The only noticeable morphological
difference between the subspecies, except in the size of the tympanum,
is the shape of the snout. In _infucata_ the snout is bluntly rounded in
lateral profile and truncate in dorsal profile, whereas in _pseudopuma_
the snout is more acutely rounded in lateral profile and acuminate in
dorsal profile (Fig. 1). This external difference is correlated with the
nature of the underlying premaxillaries. In _infucata_ the
premaxillaries lie in a transverse plane and have short, nearly vertical
alary processes, whereas in _pseudopuma_ the premaxillaries lie at a
slight angle and have longer alary processes that are inclined
posteriorly.

TABLE 1.--Variation in Certain Measurements and Proportions in the
Subspecies of Hyla pseudopuma. (Means Are Given in Parentheses Below the
Observed Range.)

==================+========+==+==========+==========+==========+==========
| | |Snout-vent| Tibia | Foot | Tympanum/
SUBSPECIES | Sex | N| length | length/ | length/ | eye
| | | | S-V L | S-V L |
------------------+--------+--+----------+----------+----------+----------
_H. p. pseudopuma_|[Male] |31| 37.6-41.4| 48.5-55.0| 44.7-52.9| 47.6-66.7
|[symbol]| | (39.7) | (51.5) | (48.2) | (57.6)
| | | | | |
_H. p. infucata_ |[Male] |31| 37.6-42.9| 50.7-56.9| 43.3-49.5| 41.8-55.3
|[symbol]| | (39.5) | (53.4) | (47.4) | (49.2)
| | | | | |
_H. p. pseudopuma_|[Female]|11| 41.6-47.6| 49.1-53.8| 45.4-49.5| 57.9-71.4
|[symbol]| | (44.3) | (51.7) | (47.6) | (60.2)
| |