The maxillae (fourth limbs) of myodocopine Ostracoda are difficult to interpret correctly because of their complexity, which has led to inaccurate descriptions of the limb in the literature. Maxillae of species of the Sarsiellinae are described and illustrated herein in their natural orientation on the body of the animal, and clues are presented to assist in more accurate descriptions of the limb when compressed under a cover slip. It is shown that the anterior-to-posterior sequence of the three endites of the protopod in the Sarsiellinae is the reverse of that in the Cypridinidae, Philomedidae, and Rutidermatidae.