Aglajidae Family

Family Aglajidae

The body is usually long and somewhat cylindrical in appearance and often strikingly coloured or marked. The shell is reduced and internal.
A large head shield most often of a triangular shape possesses sensory bristles on the broader anterior edge near the mouth with the lateral corners frequently lobed. The visceral hump extends posteriorly usually into long tapering caudal lobes often longer one side than the other.
The well developed parapodia arise from the sides of the foot to just cover the sides of the body or they may extend towards the midline and sometimes meet. The gill is not visible externally.
Aglajids are all active predators on other sea slugs (mainly the bubble shells), polychaetes, nemerteans and some flatworms, depending on the species.