Family Oplophoridae Dana, 1852

Diagnosis (Fig. 7F–J): rostrum dentate both dorsally and ventrally; second maxilla with proximal endite bearing reduced papilla and submarginal lamina; first maxilliped with three-segmented endopod (if two-segmented then as long as distal endite); second maxilliped with distal segment suboval and attached almost transversely to preceding joint.