. . . . . . "Neotrypaea californiensis"@en . . . . "*Callianassa occidentalis (Stimpson, 1856)" . . "*Callianassa californiensis (Dana, 1854)" . . "Neotrypaea californiensis (formerly Callianassa californiensis), the Bay ghost shrimp, is a species of ghost shrimp that lives on the Pacific coast of North America. It is a pale animal which grows to a length of 11.5 cm (4.5 in). One claw is bigger than the other, especially in males, and the enlarged claw is thought to have a function in mating. N. californiensis is a deposit feeder that lives in extensive burrow systems, and is responsible for high rates of bioturbation."@en .