The specimens from Oaxaca are only tentatively assigned to _occidentalis_. All are immature and lack maxillary teeth. Taylor (1941:147) stated that the maxillary teeth are absent in young _occidentalis_. One from Rio Sarabia is a male with a body-length of 29 mm. and a tail-length of 22 mm. The dorsum is reddish brown streaked with dark gray; the venter is dark gray. Two small individuals (one from Sarabia and one from Ubero) have body-lengths of 19 and 21 mm. and tail-lengths of 10.5 and 11 mm. In life they were pale yellowish tan above with a brown triangular mark on the occiput, but with no middorsal stripe. Both were found in the axils of elephant ear plants (_Xanthosoma_). This species has been noted by Goodnight and Goodnight (1956:146) on the Atlantic lowlands at Palenque, Chiapas, and by Shannon and Werler (1955:362) at several localities in Los Tuxtlas, Veracruz. I have collected it at Vista Hermosa on the eastern slopes of the Sierra Madre Oriental above Tuxtepec in northern Oaxaca. Both _B. occidentalis_ and _B. rufescens_ have been reported from Palenque, Chiapas (Taylor and Smith, 1945:547). Reexamination of specimens from northern Chiapas and Tabasco is needed to verify the sympatric occurrence of these two similar species. =Bolitoglossa platydactyla= Tschudi _Oaxaca_: La Oaxaquena; Tolosita (2). _Veracruz_: Acayucan; Cuatotolapam; 25 km. ESE of Jesus Carranza; 14 km. E of Suchil; 2.7 km. N of Tula. Known only from the Gulf lowlands in the isthmian region, this species has been taken in a variety of habitats within the humid forest area: under outer leaves of banana plants, under a rock along a stream, under a log in a plowed field, and on a reed in a pond at night. Three adult males have an average snout-vent length of 44 mm. and a tail-length of 41 mm. In life the color of the dorsum varied from orange-yellow to orange-tan, usually being more orange on the tail. The iris was a reddish orange. =Bolitoglossa veracrucis= Taylor _Veracruz_: 35 km. SE of Jesus Carranza (21). This species is known only from the type series collected at night on a limestone cliff by Walter W. Dalquest. If this salamander is restricted to this type of habitat, it should be found in the region of extensive limestone outcroppings in northern Chiapas and southern Tabasco. =Rhinophrynus dorsalis= Dumeril and Bibron _Oaxaca_: Ixtepec; Limon; Salina Cruz (18); Tehuantepec (57); Tuxtepec (3). _Veracruz_: Amatitlan (3); Cosamaloapan (5); Novillero (2); San Lorenzo. This species inhabits the scrub forests of the Pacific coastal plain and the savannas in southern Veracruz; apparently it does not occur in rainforest. Consequently, its distribution in the isthmus is discontinuous. PLATE 1 [Illustration: FIG. 1. Savanna about 75 kilometers east of Coatzacoalcos, Veracruz. Photograph by L. C. Stuart.] [Illustration: FIG. 2. Low scrub forest near Alvarado, Veracruz. Photograph by L. C. Stuart.] PLATE 2