Atelopus pachyrhynus Miranda-Ribeiro, 1920 Melanophryniscus orejasmirandai Prigioni and Langone, 1987 Melanophryniscus pachyrhynus is a species of toad in the family Bufonidae.

It is known from São Lourenço do Sul in southern Brazil and from Uruguay.

[2] Populations in Uruguay were until recently considered a different species (Melanophryniscus orejasmirandai) and assessed as being vulnerable.

[3] Its natural habitats are subtropical or tropical seasonally wet or flooded lowland grassland, intermittent freshwater lakes, and intermittent freshwater marshes.

This Bufonidae article is a stub.