Summary
This paper deals with 13 species of Oligochaeta, Glossoscolecidae, from the Amazonian Brazil. Two new genera are erected, Tuiba, gen. n. with two species, T. dianae, sp. n. and T. tipema, sp. n., and Amazo, gen. n with one species, A. nia, sp. n. The following new species and subspecies are described. Andiorrhinus venezuelanus tarumanis, subsp. n., A. caudatus, sp. n. Rhinodrilus brasiliensis buritis, subsp. n., R. lucilleae, sp. n. R. curiosus, sp. n., R. elisianae, sp. n., and Glossoamus (G.) sucunduris, sp. n. Andiorrhinus amazonius Michaelsen 1918 is redescribed. New occurrences are indicated for Andiodrilus icomi Righi, 1971, and for the peregrine earthworm Pontoscolex corethrurus (Fr. Müller, 1857). A key for the Rhinodrilus's species with two pairs of spermathecae is presented. Sperm resorption was seen in the spermathecae of Amazonia and Glossodrilus (G.) sucunduris.