an agree well with the diagnosis of _Hypopachus oxyrrhinus ovis_
by Shannon and Humphrey (1958). With the exception of one specimen from
Tangamandapio, all have dark bellies extensively mottled or spotted with
cream-color. Most of the specimens have some form of an irregular,
usually broken, dark line from the occiput to the groin. In eight
specimens there is no line or linear arrangement of spots; instead the
dorsum is spotted or flecked with dark brown. The ground color of the
dorsum and flanks varies from dull reddish brown to grayish brown;
cream-colored spots are evident on the flanks and posterior surfaces of
the thighs in all specimens (Pl. 6, Fig. 2).

In comparison with 14 specimens from Queseria, Colima (UMMZ 80001-2),
individuals from the Mexican Plateau have a darker venter with bolder
markings, and a more mottled dorsum.

In Michoacan this species has been taken between 1500 and 2200 meters on
the Mexican Plateau, where it inhabits mesquite-grassland and cultivated
areas.

~Rana dunni~ Zweifel

_Rana dunni_ Zweifel, Copeia, no. 2:78, July 15, 1957.--Lago
de Patzcuaro, Michoacan, Mexico.

Lago de Patzcuaro (23); Rio de Morelia, near Undameo (8).

Aside from the type series of this species, there are in the Museum of
Zoology at the University of Michigan six specimens taken from "tanks"
at the limnological station at Patzcuaro by Paul S. Martin in 1948, and
eight specimens found in shaded ditches along the Rio de Morelia by
Robert R. Miller on April 4, 1957. The Rio de Morelia flows into Lago de
Cuitzeo; this drainage is separated from Lago de Patzcuaro by a chain of
hills about 2400 meters in elevation. Dr. Richard G. Zweifel has
examined these specimens and has informed me that, although they differ
slightly from typical _Rana dunni_, they are much closer to that species
than to _Rana montezumae_.

~Rana megapoda~ Taylor

_Rana megapoda_ Taylor, Univ. Kansas Sci. Bull., 28:310,
November 12, 1942.--Chapala, Jalisco, Mexico.

La Palma (8).

These specimens (USNM 113998-114005) are from the marshes along the
southeastern shore of Lago de Chapala. Five females have snout-vent
lengths of 124.0-138.1 (131.5), and one male has a snout-vent length of
110.2 mm. Two juveniles have snout-vent lengths of 49.7 and 56.3 mm. The
coloration of the juveniles is more bold than that of the adults. The
body proportions of these specimens agree with those presented by
Zweifel (1957