Article révisé par les pairs
Résumé : The previously unknown life cycles of Octotiara russelli and Stomotoca atra are described. Both species present differentiated hydroids and medusae. From the morphology of the newly liberated medusae both species are referred to the Pandeidae and, from the presence of a manubrial peduncle, to the subfamily Stomotocinae, together with Timoides. Some aspects of feeding and gonad growth are described and discussed. © 1989.