A Red-brown to purple carapace with a spine-tipped edge on the front half; contains ten small teeth on the anterolateral margins; tenth tooth is the most prominent. There are no teeth on the posterolateral margins. Width of carapace up to 23 cm. Chelipeds are purple to brownish at the base and the hands are white with purple. The carpus, propodus, and dactyl of the chelae have spiny ridges. This species alone accounts for more than 99 percent of all crab species taken for commercial reasons.
- Hart, Josephine F.L., 1982. ;Crabs and their relatives of British Columbia. ; British Columbia ProvincialMuseum Handbook 40. ; Paperback. ; 267 pages. ; This smallpaperback contains keys and individual descriptions and drawings of 95species of true crabs, hermit crabs, other anomurans, mud and ghost shrimp(but not shrimp or prawns) found off British Columbia. ; An introductiongives an extensive discussion of the general biology and anatomy of crabsand other similar crustaceans, including topics such as sexual dimorphism,larvae, and parasites. ; A variety of drawings and tables are included. ;The general characteristics of each of the families included in the bookare discussed. ; Keys to the families of each section (Thalassinidea,Anomura, Brachyrua) are included but one needs to know beforehand whichsection the animal is in. ; Keys are also included for the membersof each family. ; A useful key for the serious student wanting to identifycrabs. http://www.wallawalla.edu/academics/departments/biology/rosario/inverts/Annotated_Bibliography.html#Hart+1982
- Wicksten,Mary K., 2009. ; Decapod Crustacea of the Californian and OregonianZoogeographic Provinces. ; UC San Diego Scripps Institution of OceanographyLibrary, Scripps Institution of Oceanography. ; http://escholarship.org/uc/item/7sk92dz ;418 pages. ; Published online only. ; This excellent key coversdecapods (crustaceans such as crabs, shrimp, spiny lobsters, hermit crabs,and crayfish) from shallow and deep water from Puget Sound south to thePacific coast of Baja California. ; Includes many subkeys, drawings,and photos. ; No glossary, table of contents, or index. ; Thisis the place to go for the most up-to-date key for decapods. ; MaryWicksten plans to publish an updated version of this key soon. http://www.wallawalla.edu/academics/departments/biology/rosario/inverts/Annotated_Bibliography.html#Wicksten+2009
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