This crustacean is known from the Strait of Georgia, Canada, to Mexico.
In adult males, the front of the head forms a broad transverse plate with minute scalloping.
It is known from benthic sediments on the continental shelf, slope and in submarine canyons.
In adult males, the abdominal appendages lack setae.
In adult males, the tail plate is distinctly triangular.
An extinction-risk assessment has not been added yet.