Stephos fernandoi sp. n., from Cozumel, Mexico. SEM-processed specimens. Female. A habitus, semi-lateral view B same, lateral view, another specimen C rostrum, ventral view D antennule segments 9–13, spiniform seta on segment 12 arrowed E genital double-somite, ventral surface showing ornamentation (arrows) F caudal rami showing caudal setae II-VII, ventral view G distal segment of leg 5 H leg 5, ventral view. Male. I left leg 5 showing segmentation J same, detail of distal segment K right leg 5, distal segment, detail of apical end L right leg 5, distal segment. Scale bars A, B 100 μm; C, D, H, I 20 μm, E–G, L 10 μm; J, K 5 μm.