Studies on the microsporogenesis in Coffea stenophylla and C. salvatrix demonstrated that the meiotic chromosomes of both species resemble those of the other diploid species of the genus Coffea. Complete chromosome pairing was observed from early prophase till first metaphase, "with 11 bivalents being formed in most of the cells. These bivalents fall apart in a quite regular manner at the two anaphases. The average numbers of bivalents with three, two and one chiasma at first metaphase are 1, 4 and 6 por C. stenophylla and 1, 3 and 7 for C. salvatrix, the mean number of chiasmata per cell being 17 and 16 respectively. Despite of the very similar numbers of chiasmata per cell, there is a greater variation in the chiasmata distribution to the bivalents in C. stenophylla than in C. salvatrix. The irregularities observed are concerned principally to the occurrence of univalents, chromosomes lagging and unequal chromosome distribution to the poles at both anaphases. The possibility of the formation of gametes either with odd chromosome numbers or unbalanced chromosome set, besides the haploid and normal ones, is discussed.