Key to species of Aatolana

1 Frontal lamina, anterior margin forming an excavate process; coxa 7, posterior margin concave; basis of pereopod 7, anterior margin with plumose setae; pleotelson, dorsal surface with setae; uropod rami, lateral margins sinuate............ A. schioedtei

-- Frontal lamina, anterior margin convex with a small process protruding between the antennal bases, or acute and deflected dorsally from a rounded posteroventral projection; coxa 7, posterior margin straight or convex; basis of pereopod 7, anterior margin with setae which lack setules; pleotelson, dorsal surface without setae; uropod rami, lateral margins straight or slightly convex............................................................................................................................................... 2

2 Frontal lamina, anterior margin convex with a small process protruding between the antennal bases; antenna extending to the posteriorofpereonite5 A.rapax

-- Frontal lamina, anterior margin acute and deflected dorsally from a rounded posteroventral projection; antenna extending to the posterior of pereonite 4 A. springthorpei n.sp.