Abstract
The karyotype of the red brocket deer M. americana temama is described. Skin biopsies of a pair and their young male offspring were cultured for the study of centromeric heterochromatin and G-bands. The chromosome number of father and son was 2n = 50; that of the doe was 2n = 49 in all metaphases examined. In the doe, one of smallest acrocentric elements was missing and is apparently translocated to the end of the long arm of 1 submetacentric chromosome no. 4. This translocation of the non-Robertsonian type has not been described in Artiodactyla before. The chromosome number differs from that reported to be as 68 in 1 single specimen reported previously.