seum of Comparative Zoology
MVZ Museum of Vertebrate Zoology
NMW Naturhistorisches Museum Wien
SU Stanford University Museum of Natural History
TCWC Texas Cooperative Wildlife Collection
UIMNH University of Illinois Museum of Natural History
UMMZ University of Michigan Museum of Zoology
USNM United States National Museum
UTNHC University of Texas Natural History Collection

Throughout the accounts of the species all measurements are given in
millimeters; if the range of variation is given, the mean follows in
parentheses.

AMPHIBIA

Caudata

~Ambystoma amblycephalum~ Taylor

_Ambystoma amblycephala_ Taylor, Univ. Kansas Sci. Bull.,
26: 420, November 27, 1940.--Fifteen kilometers west of
Morelia, Michoacan, Mexico.

Fifteen km. W of Morelia (19); 11 km. SSE of Opopeo (12); 8
km. S of Patzcuaro; 24 km. S of Patzcuaro (2); Quiroga (20);
Tacicuaro (167).

Taylor and Smith (1945:530) presented data on 137 specimens collected at
Tacicuaro on October 1, 1939; these are all larvae and metamorphosing
individuals. Aside from these, the largest larva examined (UMMZ 104962
from 15 km. W of Morelia) has a snout-vent length of 70.0 mm. and a tail
length of 53.5 mm. The larvae are pale pinkish tan above and somewhat
paler below; there is a lateral row of cream colored spots. The
tail-fin, which is deepest at mid-length, extends to the back of the
head and is flecked with brown. In small larvae the outer edge of the
tail-fin is dark brown. The eyes are large. Two small metamorphosed
specimens (UMMZ 98967) from 24 kilometers south of Patzcuaro are
tentatively referred to this species. These specimens have body lengths
of 49.0 and 45.0 mm. and tail lengths of 36.0 and 31.5 mm.,
respectively. They have 17-17 and 16-15 vomerine teeth arranged in a
broad arch behind the choanae, 10 costal grooves, and 7 intercostal
spaces between adpressed toes. The dorsal color is uniform brown; that
of the venter is a dusty cream.

Larvae were collected from shallow ponds near Quiroga and 15 kilometers
west of Morelia; metamorphosed individuals were taken from beneath logs
in pine and fir forests at elevations from 2300 to 2800 meters.

~Ambystoma dumerili dumerili~ (Duges)

_Siredon Dumerili_ Duges, La Naturaleza, 1:241, 1870--Lago
de Patzcuaro, Michoacan, Mexico.

_Bathysiredon dumerilii_, Dunn, Notulae Naturae, 36:1,
Novem