The "persona" in the name refers to the dark stain on the interior of the apex, which sometimes looks like a mask or a person's face.
- Harbo, Rick M., 1997. ;Shells and Shellfish of the Pacific Northwest: ; A Field Guide. ;Harbour Publishing, Madeira, BC. Canada. ; ISBN 1-55017-146-1. ;Paperback, 271 pp. ; The front of this book has color photos and briefdescriptions of mollusks and brachiopods found in the northwest. ;The latter part of the book has somewhat more detailed descriptions keyedto the color photos. ; Organized taxonomically. http://www.wallawalla.edu/academics/departments/biology/rosario/inverts/Annotated_Bibliography.html#Harbo+1997
- Morris, Percy A., 1966. ;Pacific Coast Shells. ; Peterson Field Guide. ; 297 pp, paperback. ;Houghton Mifflin Co., Boston. ; ISBN 0-395-08029-0. ; Brief descriptionsand mostly black-and-white photos of hundreds of shells found on the NorthAmerican Pacific coast. http://www.wallawalla.edu/academics/departments/biology/rosario/inverts/Annotated_Bibliography.html#Morris+1966
Habitat: Underside of rocks and ledges during the day, more wide-ranging at night