Pseudoeurycea robertsi (Taylor)
Oedipus robertsi Taylor, Univ. Kansas Sci. Bull., 25:287, July 10, 1939.—Nevado de Toluca, México.
Pseudoeurycea robertsi Taylor, Univ. Kansas Sci. Bull., 30:209, June 12, 1944.
Atzimba (3); Macho de Agua (9); Puerto Lengua de Vaca (14).
Previously this species has been recorded only from the type locality. In July, 1956, individuals referable to this species were found at two sites in pine-fir forest immediately to the east of Macho de Agua and in pine-oak-fir forest at Atzimba. On August 20, 1958, a series was collected in pine-fir forest at Puerto Lengua de Vaca. These localities are between 2900 and 3000 meters in the Cordillera Volcánica in eastern Michoacán.
In life the coloration of these salamanders was highly variable. The belly and undersurfaces of the tail and hind limbs were pale gray, with or without silvery white flecks; the chin was a cream-color and flecked with silvery white in some specimens. The middorsal area was brown, orange-brown, or dull grayish yellow. The flanks and lateral surfaces of the tail were black with yellowish flecks or streaks on the flanks and yellowish or orange-brown flecks on the tail. The iris was golden brown. Measurements of eight males and two females are, respectively: snout-vent length, 42.5-56.0 (49.5), 54.0-60.0 (57.0); tail length, 42.0-56.0 (48.1), 52.0-55.0 (53.5). The smallest juvenile has a snout-vent length of 28.0 mm. and a tail length of 23.0 mm. Of the 26 available specimens, six have 12 costal grooves, and the others have 11.
In comparison with 36 topotypes, the specimens from Michoacán have a less striking dorsal color pattern; none has a well-defined dorsal reddish brown area or bold reddish mottling on the tail. Furthermore, the specimens from Michoacán have paler venters than do topotypic specimens.
Salientia
Rhinophrynus dorsalis Duméril and Bibron
Rhinophrynus dorsalis Duméril and Bibron, Erpétologie générale, vol. 8:758, 1841.—Veracruz, Veracruz, México.