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. Mouth of the Río Balsas (10). These specimens (BMNH 1914.1.28.181-90) were collected by Gadow in 1908 and reported by him (1930:72): "Whilst this very sluggish termite-eating toad is common enough in the sweltering hot country of the state of Vera Cruz, up to an elevation of 1500 feet, it was unknown on the west side of the Isthmus until I found it in great numbers near the mouth of the Balsas River, in and near fresh-water pools, where it attracted attention by its loud peculiar voice during the pairing season in the month of July." Subsequently, Peters (1954:3) verified the identification of these specimens. Although torrential rains fell during the week in July, 1955, that I spent at Playa Azul near the mouth of the Río Balsas, the distinctive voice of _Rhinophrynus_ was not heard. Elsewhere on the Pacific coast of México adult _Rhinophrynus_ have been reported only from Tehuantepec and a few localities on the coastal lowlands of Chiapas. Taylor (1942b:37) found on the coast of Guerrero a tadpole that was referred to the genus _Rhinophrynus_ by Orton (1943). In the summer of 1960 adults of _Rhinophrynus_ were collected near Acapulco, Guerrero (Fouquette, _in litt._). These recent collections verify the existence of the species along the Pacific lowlands of México at least as far north as Michoacán. ~Scaphiopus hammondi multiplicatus~ Cope _Scaphiopus multiplicatus_ Cope, Proc. Acad. Nat. Sci. Philadelphia, 15:52, June 8, 1863.--Valley of México. _Scaphiopus hammondi multiplicatus_, Kellogg, Bull. U. S. Natl. Mus., 160:22, March 31, 1932.