larvae from Tacicuaro (UMMZ 89255) were collected by Dyfrig Forbes
in October, 1939; those from Patzcuaro, presumably Lago de Patzcuaro
(BMNH 1914.1.28-247-8 and CNHM 948), were collected by Hans Gadow and
Seth Meek in 1908.

~Pseudoeurycea belli~ (Gray)

_Spelerpes belli_ Gray, Catalogue Batrachia Gradientia
British Museum, p. 46, 1850.--Mexico. Type locality
restricted to 2 miles east of Rio Frio, Puebla, Mexico, by
Smith and Taylor (1950a:341).

_Pseudoeurycea bellii_, Taylor, Univ. Kansas Sci. Bull.,
30:209, June 12, 1944.

Axolotl (2); Carapan; Cerro Tancitaro (84); Macho de Agua;
22 km. W of Mil Cumbres; Opopeo; Patzcuaro (8); Puerto Hondo
(2): San Jose de la Cumbre; San Juan de Parangaricutiro
(42); Uruapan (5); Zacapu (4).

This salamander seems to reach its greatest abundance in Michoacan in
the Sierra de los Tarascos between Patzcuaro and Tancitaro, where it is
found at elevations from 1500 to 2900 meters. It is found less commonly
in the eastern part of the Cordillera Volcanica in Michoacan, where it
sometimes occurs in association with _Pseudoeurycea robertsi_.

On June 22 and 23, 1955, four clutches of eggs of this species were
found beneath adobe bricks and rocks on the volcanic ash that has buried
the village of San Juan de Parangaricutiro. The eggs were unstalked and
separate, but adherent in clumps of three or four (Pl. 2, Fig. 1). The
outer membranes were covered with fine particles of ash. The ash beneath
the stones where the eggs were found was only slightly moist; one clump
of eggs was partially desiccated. Three complete clutches have 20, 23,
and 34 eggs; one clutch of 15 eggs was being eaten by beetles
(Tenebrionidae: _Eleodes_ sp.). The eggs vary in size from 4.6 to 6.5
mm. and average 5.3 mm. in diameter. They are unpigmented. Surrounding
the embryo is a vitelline membrane, an inner, and an outer envelope
(Fig. 1). In an average-sized egg having an embryo 4 mm. in length, the
diameter of the outer membrane is 5.3 mm., the inner membrane 5.0 mm.,
and the vitelline membrane 4.6 mm. All of the eggs contained embryos in
which the limb buds were developed; in about half of these the eyes were
distinctly visible.

[Illustration: Fig. 1. Diagram of an egg of _Pseudoeurycea belli_ from
San Juan de Parangaricutiro, Michoacan. x 10.]

The first heavy rain of the season occurred on the night of June 22,
1955. Thus, at least sometimes, _Pseudoeu