Tags: Crustacean.
Lucifer is a little-known and degenerate genus of prawns the only genus in the family Luciferidae. Lucifer has a long body but many fewer appendages than other prawns with only three pairs of pereiopods remaining all without claws. It also bears no gills. The females uniquely among prawns carry the fertilised eggs on her pleopods until they are ready to hatch. This parallels the development of a similar system in pleocyemates although the attachment is less strong in Lucifer.