. Taxonomy
3.1. Family Leuconidae Sars, 1878
3.1.1. Abyssoleucon gen. n.
3.1.1.1. Diagnosis. Long serrated dorsomedian line on the carapace;
teeth ventrally of the pseudorostrum; subrostral tooth relatively
small, ending at level of ocular lobe; first antenna with accessory
flagellum as long as the basal article of the main flagellum; female