Petrolisthes cabrilloa Glassell, 1945: 225 Kropp 1981: 307 Petrolisthes cabrilloi Haig 1960: 88 Haig et al . 1970: 26 Haig & Abbott 1980: 588 Jensen 1995: 76 Kuris et al . 2007: 648 Sloan et al . 2010: 159 Decapod Crustacea of the Californian and Oregonian Zoogeographic Provinces 3371 Wicksten, Mary K. Zootaxa 2012 2012-07-04 3371 1 307 ddba0b55-d07c-4085-916a-37a18a36f989 Glassell, 1945 Glassell 1945 [151,578,1063,1089] Malacostraca Porcellanidae Petrolisthes GBIF Animalia Decapoda 155 156 Arthropoda species cabrilloi  ( Fig. 37A, Pl. 8B)      Petrolisthes cabrilloa Glassell, 1945: 225, fig. 4. —  Kropp 1981: 307.    Petrolisthes cabrilloi. —  Haig 1960: 88, pl. 26, fig. 3. —  Haig et al. 1970: 26. —  Haig & Abbott 1980: 588, fig. 24.17. —  Jensen 1995: 76, fig. 153. —  Kuris et al. 2007: 648. —  Sloan et al. 2010: 159.   Diagnosis.Front triangular, with deep median sulcus. Carapace about as long as broad, usually covered with plications, fine granules; but sometimes nearly smooth. Chelipeds finely granular. Merus with strongly projecting lobe on anterior margin. Carpus setose, about twice as long as wide, with small lobe occupying about 0.25 of proximal end, granules along outer margin enlarged, forming crest ending distally in sharp tooth. Chela smooth to lightly pubescent, gape with thick pubescence. Pereopods 2–4 rugose, merus of pereopod 3 unarmed, not inflated; all segments with tufts of setae. Carapace length to 16 mm.  Color in life.Carapace brown to tan, with striations, numerous spots of pale greenish white. Chelipeds brown, chela may have greenish tinge, red spot at base of dactyl. Pereopods 2–4 dull brown, with bands of tan, darker brown on propodus. Outer segments of maxillipeds red ( Haig 1960).  Habitat and depth.Among rubble, on pilings or among mussels, intertidal zone.   Range. Morro Bay, Californiato Magdalena Bay, Baja California, Mexico, including Santa Cruzand Santa Catalina Is., California. Typelocality Anaheim Landing, California.   Remarks.This porcelain crab seems to replace  P. cinctipessouth of Point Conception, California. It is extremely common. As many as 22 individuals were found under a single rock with area of about 0.9 m 2among rocky rubble near Point Fermin, Los AngelesCounty, California. Sloan et al. (2010)reported that it is parasitized by the rhizocephalan  Lernaeodiscus porcellanae. They also noted that the sizes of the largest individuals in a population varied geographically even among sites separated by only a few kilometers, perhaps in response to food. Mexico Santa Range. Morro Bay Santa Cruz 155 156 1 Baja California