This crustacean is known from Vancouver Island, Canada, to Mexico and other areas.
In adult females, the tail plate is swollen, with large upper swellings.
It is typically known from sandy-silt sediments of the continental shelf.
In adult females, the sides of the fourth thoracic segment form pointed rear side projections.
In adult females, the maxillipedal palp has three segments.
An extinction-risk assessment has not been added yet.