lata_ in having less webbing on the feet, a poorly
developed supratympanic fold, a more pustulate dorsum, and marked
differences in dorsal pattern, color, and nature of antebrachial
banding. The significance of the webbing was questioned by Shannon and
Humphrey. The nature of the supratympanic fold and dorsal pustules
changes with age (Duellman, 1956a:31). _Phrynohyas inflata_ is known to
attain a snout-vent length of 95 mm. Dermal structures that undergo
ontogenetic change are of little importance in comparing a juvenile with
a large adult. The only significant difference in color pattern between
_P. inflata_ and _P. corasterias_ is the presence of wide transverse
bands on the limbs of the latter. In this respect _P. corasterias_
approaches _P. latifasciata_, a species known only from two specimens
from southern Sinaloa. The acquisition of additional specimens from
Jalisco, Nayarit, and Sinaloa may show that _P. inflata_ and _P.
latifasciata_ are conspecific, as suggested by Duellman (1956a:21).
Nonetheless, the specimen on which the description of _P. corasterias_
was based is not sufficiently different from the known specimens of _P.
inflata_ to warrant specific recognition.

~Hyla arenicolor~

_Hyla arenicolor_ Cope, Jour. Acad. Nat. Sci. Philadelphia,
ser. 2, 6:84, July, 1866.--Northern Sonora, Mexico. Type
locality restricted to Santa Rita Mountains, Pima County,
Arizona, by Smith and Taylor (1950a:354).

Agua Cerca; Cascada Tzararacua (3); Chinapa; Cojumatlan; Dos
Aguas; El Sabino (25); El Espinal; Lago de Camecuaro;
Lombardia (2); Tupataro; Zinapecuaro.

Altitudinally this frog ranges from 500 to 2100 meters; although the
environments in which it has been found vary from open arid tropical
scrub forest to pine forest, it usually is found near rocky streams in
these habitats. There is great disparity in size between specimens from
the mountains and those from the Tepalcatepec Valley. Seven males from
elevations in excess of 1400 meters have an average snout-vent length of
34.7 mm.; nine from elevations below 1000 meters have an average
snout-vent length of 49.1 mm. In life a male collected at night at
Lombardia (UMMZ 112846) had dark brown spots on a grayish brown dorsum;
the groin, anterior and posterior surfaces of the thighs, and ventral
surfaces of the hind limbs and palms were yellowish orange. The belly
and tips of digits were white; the vocal sac was purplish brown,