_Phyllobates cystignathoides_ Cope, 1877:89-90 [Syntypes.--USNM 32402-32409, from Potrero, near Cordoba, Veracruz, Mexico, collected by Francis Sumichrast]. Boulenger, 1882:196. _Syrrhophus cystignathoides_: Cope, 1879:268. Kellogg, 1932: 126-27. Taylor and Smith, 1945: 582-83. Smith and Taylor, 1948:50. Martin, 1958:49. _Syrrhaphus cystignathoides_: Guenther, 1900:218. _Syrraphus cystignathoides_: Diaz de Leon, 1904:10. _Syrrhopus cystignathoides_: Barbour and Loveridge, 1946:170. [Illustration: FIG. 5: Distribution of _Syrrhophus cystignathoides campi_ (solid symbols) and the nominate subspecies (open symbols).] _Diagnosis._--Venter areolate; interorbital light and dark bars present; ground color yellow to brownish-yellow in life (Fig. 4b). _Remarks._--Firschein (1954) briefly considered the status of Peters' (1871) _Phyllobates verruculatus_ and noted that if it was a _Syrrhophus_ it would probably be referrable to _S. cystignathoides_. Peters' (1871) original description corresponds well with _S. cystignathoides_, and the type-locality ("Huanusco" = Huatusco) is within the range of that species. Firschein (1954) expressed doubt that _verruculatus_ was a _Syrrhophus_, because Peters placed it in another genus. However, Peters described _verruculatus_ a decade before Cope diagnosed the genus Syrrhophus. Most frogs now called _Syrrhophus_, plus a number of lower Central American frogs now placed in a variety of genera were placed in _Phyllobates_ by Boulenger, Cope, and Peters. The types of _Phyllobates verruculatus_ were destroyed during World War II (Guenther Peters, _in litt._); the specimens subsequently assigned to the taxon by Kellogg (1932) are _Syrrhophus cystignathoides_. Because the type specimens are lost and because the name antedates the more established name, _cystignathoides_, I favor retaining _Phyllobates verruculatus_ Peters as a _nomen dubium_. Smith and Taylor (1948) reported _S. verruculatus_ from Tianguistengo, Hidalgo, Mexico. These specimens are examples of _verrucipes_. Smith (1947) reported a specimen of _verruculatus_ from San Lorenzo, Veracruz. Firschein (1954) referred it to _cystignathoides_, and Duellman (1960) concluded that both authors were in error and that the specimen (USNM 123530) was a _leprus_. _Etymology._--The trivial name is the diminutive of _Cystignathus_, a once-used generic name for several leptodactylid frogs. _Distribution._--Low and moderate elevations in the foothills along the Sierra Madre Oriental from eastern San Luis Potosi to Central Veracruz, Mexico (Fig. 5).