Paleanotus intermedius sp. nov. (Palmyridae), Paramphinome australis Monro, Amphinome rostrata (Pallas) (Amphinomidae) and Euphrosine armadilloides Ehlers (Euphrosinidae) are described and their distribution in the Argentine Biogeographic Province is established. Some additions are made to the knowledge of the generic taxonomy of the Palmyridae.