of 850 to 2150 meters on
the slopes of the Cordillera Volcanico and in the Sierra de Coalcoman.
Usually the frogs are found along rocky streams, but at Coalcoman they
were found in a hyacinth-choked old river channel, and at El Sabino, in
irrigation ditches.

In most specimens the dorsum is dark olive-brown; in some it is pale
olive-tan with dense dark brown mottling on the back and dark transverse
bands on the hind limbs.

Thirteen tadpoles (UMMZ 94271) taken from a seepage pool by a stream
near Uruapan closely resemble the description of tadpoles of this
species given by Taylor (1942b).

REPTILIA

Testudines

~Chelonia mydas~ (Linnaeus)

_Testudo mydas_ Linnaeus, Systema naturae, ed. 10:197,
1758.--Type locality restricted to Ascension Island by
Mertens and Mueller (1928:23).

_Chelonia mydas_, Brongniart, Bull. Sci. Soc. Philom., 2:89,
1800.

Beach between Rio Motin and Rio Colotlan (2); Maruata; Playa
Azul (4).

Green sea turtles are abundant along the coast of Michoacan. Laying
females and fresh nests were found on August 6-12, 1950, July 14-16,
1951, and July 8-10, 1955. The general account of sea turtles on the
coast of Michoacan that was given by Peters (1957) is supplemented here
by my field notes on the actions of one female observed on the night of
July 14, 1951, near Maruata by Donald D. Brand and I. Because of a full
moon, visibility was excellent.

In the course of the day several _Chelonia_ were seen in the surf;
shortly after dark the first turtle was observed on the beach. Several
were observed to come out on the beach and crawl nearly to the strand
line, only to return to the sea.

At 10:20 p. m. one turtle was seen about 15 meters from the water. We
watched this turtle from some distance and observed that by 10:26 p. m.
she had moved about ten meters to a bank of sand about two meters high.
Ten minutes later she had climbed the bank and disappeared over the top
into the brush. We moved closer and remained hidden below the bank.
Although we could not see the turtle, we could hear her movements.
Between 10:37 and 10:57 p. m. the turtle dug, often flipping the dry
sand for a distance of about two meters. When this energetic digging
ceased, we moved up the bank to see that she was facing inland and
sitting in a depression about one and one-half meters in diameter and 30
centimeters in depth. She had cleaned out this depression in the past 20
mi