Boone, Crustacea, Cruises of "Ara" and "Alva" 273 



Family: PORCELLANIDAE 



Genus: PETROLISTHES Stimpson 



Petrolisthes granulosa (Guerin de Meneville) 



Plate 108 



Type: M. Guerin de Meneville's type was collected "on the 

 coasts of Valparaiso, Chile, and deposited in the Paris Museum; 

 his text was published in 1835 and figured in 1838. Dr. Henri 

 Milne Edwards published a description, apparently based on the 

 same specimens, under the name Porcellana striata in "Suites a 

 Buffon," edition Roret, 1837. The type of Mr. J. W. Randall's 

 Porcellana cincfipes was collected by Mr. Thomas Nuttall and is 

 deposited in the Philadelphia Academy of Natural Sciences. The 

 type of Porcellana rupicola Stimpson (1857), which has long 

 been accepted as synonymous with P. cinctipes, was obtained on 

 the California coast, in the littoral zone, at the Farallones, San 

 Luis Obispo and Monterey and deposited in the Boston Society 

 of Natural History, the Philadelphia Academy of Natural Sciences 

 and the Smithsonian Institute (those at the latter Institution are 

 no longer extant). Likewise Petrolisthes eriomerv^s Stimpson 

 (1871), taken by Mr. Alexander Agassiz, in Mendocino County, 

 California, was deposited in the Smithsonian, and is longer ex- 

 tant. The type of Porcellana valida Dana is given as "Valaparaiso, 

 Chile," where this species was later taken by the "Challenger" ; 

 Dana's type is in the Philadelphia Academy of Natural Sciences. 



Distribution: This interesting little crab has an extensive 

 distribution in the littoral zone of the west coast of the Americas, 

 ranging from southern Chile northward to Vancouver Island, 

 British Columbia, on the mainland; it has also been taken in 

 the Galapagos Islands and at Hawaii. The following records for 

 it have been published: As granulosa or striata: Chile, coasts 

 of Valparaiso (Guerin; Milne Edwards), on shore of Clotilde 

 Islands, Chiloe Archipelago (Boone) ; as cinctipes or rupicola; 

 Sandwich Islands (Randall); Vancouver Island (Newcombe; 

 Bate) ; littoral zone of the California coast at Farallones, San 

 Luis Obispo, Monterey (Stimpson) ; Santa Barbara, Santa Cata- 

 lina Island, San Diego, San Miguel, west coast of Lower Cali- 

 fornia and Gulf of California (Lockington, Holmes, Ortmann) ; 

 Laguna Beach, California, (Baker) ; San Francisco Bay, on rocks 



