[Utrastructure of acinar cells of the post anal gland of Latimeria chalumnae Smith (Crossopterygii, Coelancathidae)].

The acinar-cells of the post-anal gland of Latimeria possess the same singular ultrastructural pattern. The cell outline shows remarkable complexity by extensive infoldings and interdigitations of lateral and basal plasma membranes. Mitochondria are large and very numerous. This cellular morphology correlates well with that seen in "secreting (ion-transporting) cells" of the rectal gland of Elasmobranchs. This differentiation leads to the hypothesis of a post-anal (salt-excreting) gland in Latimeria.