This crustacean is known from Oregon to southern California, USA.
In adults, a spatula-shaped process at the front of the head separates the two antennules.
It lives in the intertidal zone of sandy beaches.
In adults, the second and third basal segments of the antennules are about equal in length.
In adults, the hind edge of the tail plate is broadly rounded and finely scalloped.
An extinction-risk assessment has not been added yet.