Haemadipsidae (From Latin "haima" and "dipsa" ("blood" and "thirst", respectively)) are a family of "jawed leeches". Some are classed as monophyletic group of hirudiniform proboscisless leeches. These leeches have five pairs of eyes, with the last two separated by two eyeless segments. Most have two jaws, but some have three. The family is monotypic, containing only the subfamily Haemadipsinae, though as the family can apparently be divided into two or three distinct lineages, at least one of the proposed splits, while not a distinct family, might be a valid subfamily.