SUMMARY
The histological studies of the male genital apparatus of the Chinchilla Laniger are scares and incomplete. Due to the studies done on the male genital apparatus of Chinchilla Laniger it has been determined that the seminiferous tubes are separated by large conjunctive septum, the seminiferous epithelium varies from one tissue to another, aspect that suggests different stages in the spermatogenesis process. The epididymis channel is made up of pseudo-layered epithelium, a reduced lamina propria and a delicate muscular layer. The deferent channel wall is made up of three tunics: mucous, muscular and adventitia. The muscular tunic is the most developed part and is made up of three super posed layers of even smooth muscle cell. The histological sections done on the pelvic urethra reveals the following components: mucous, vascular layer, muscular and adventitia. The transversal sections done on the free extremity of the penis reveal the presence of the foreskin made up of three layers: tegument or external, parietal or visceral. The vesicular glands (seminal) have an intestine shaped aspect and are sustained by their own ligament, richly vascularised. The transversal section reveals a tubular aspect, the wall of these tubes is made up of: mucous, muscular and adventitia. The prostate is made up of an external part and an internal part, and is covered in a thick conjunctive-muscular capsule.