| Abstract: | Three new species of the genus Bogidiella HERTZOG (Crustacea, Amphipoda, Gammaridae) are described from subterranean waters of Mexico and Guatemala.
Two of these species (sbordonii, arganoi) have been collected during the biospeleological researches in Mexico (1969, 1971) promoted and financed by the Accademia Nazionale dei Lincei. During, these researches, also Bogidiella tabascensis VILLALOBOS, the only one species hitherto known from Central America, has been found in the type locality (Tabasco, Grutas de Cocona), and also in a new one in the Chiapas state (Grutas de Rancho Nuevo, at 2275 m).
Bogidiella sbordonii n.sp. (Mexico, Chiapas, Cueva de Cerro Brujo) and Bogidiella holsingeri n.sp. (Guatemala, Alta Verapaz, Cueva Seamay and Cueva Sepacuite n. 2) are two cave dwelling species, and have a relatively large size (respectively 7 mm and 4,5 mm); Bogidiella arganoi n.sp. (Mexico, Veracruz, Paraje Nuevo, well) is a phreatic species and has a relatively little size (2 mm).
The differences between the four Central American Bogidiella species are shown in table.
The last part of this work deals with the position of the Central American species within the genus Bogidiella, and, as far our present knowledge permits us to see, it is not possible to groups of species, based on systematic relationships, since the Bogidiella species have a complex of characters variously combinated and recurring within the various taxa just now described.
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