basis of recordMcLean J.H. (1996). The Prosobranchia. In: Blake, J.A., & P.H. Scott (eds.), <i>Taxonomic Atlas of the Benthic Fauna of the Santa Maria Basin and Western Santa Barbara Channel. The Mollusca Part 2 – The Gastropoda.</i> Santa Barbara Museum of Natural History. volume 9: 1-160., available online athttps://books.google.fr/books?id=MMdJAQAAIAAJ[details]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Etymology Named for Professor William E. Ritter, in charge of the University of California Marine Biological Laboratory at San Pedro, 1901. [details] Type locality Catalina Island, 60 fathoms [California] [details]