282 University of California Publications in Zoology [Vol. 23 



at or south of the Aleutian Islands; only nine (15%), Spironto- 

 caris prionota,° S. flexa,°* Crago communis, Eaplogaster grebnitzkii° 

 Pagurus beringanus, P. hirsutius cuius, Oregonia gracilis, Chion- 

 oecetes tanneri* Telmessus cheiragonus,° go beyond into the Bering 

 Sea, while none of the remaining seventeen (29%) are known to occur 

 north of British Columbia, in fact, the ranges of six of these, Spironto- 

 caris decora, S. hincaidi, Crago munitella, Callianassa gigas,°* Pachy- 

 cheles pubescens,°* Pinnixa tubicola, end in Puget Sound or the Straits 

 of San Juan de Fuca. Another, Crago spinosissima, does not go north 

 of Oregon, and only ten, Spirontocaris layi,° S. paludicola, Crago 

 alaskensis elongata, C. alba, Lopholithodes foraminatus* Paguristes 

 turgidus, Pagurus hemphillii, Pylopagurus minimus, Pugettia richii, 

 Pinnotheres concharum, run up into British Columbia. The thirty- 

 three species ranging northward, whose northern limits are found 

 along the Alaskan coast, at or south of the Aleutian Islands, are : 



Pandalus jordani Hapalogaster cavicauda 



Pandalus platyceros* Oedignathus inermis 



Pandalus danae° Acantholithodes hispidus° 



Hippolyte calif 'orniensis Phyllolithodes papillosus° 



Spirontocaris lamellicornis° Cryptolithodes typicus 



Spirontocaris bispinosa* Cryptolithodes sitchensis° 



Spirontocaris gracilis Lopholithodes mandtii°* 



Spirontocaris brevirostris Bhinolithodes wosnessensJcii° 



Spirontocaris cristata Munida quadrispina 



Crago stylirostris Pugettia gracilis* 



Crago franciscorum Chorilia longipes* 



Crago acclivis Scyra acutifrons* 



Crago munita Fabia subquadrata 



Paracrangon echinata Pinnixa littoralis 



Callianassa calif orniensis* Pinnixa faba 



Pagurus ochotensis Pinnixa schmitti 

 Parapagurus mertensii 



explanations, they have, for the purposes of discussion, been accepted as unques- 

 tioned. These seven species with their ranges, including both doubtful and present 

 known northern limits (in parentheses), are: 



Pagurus calif orniensis, Monterey Bay? (Santa Catalina Island) -Gulf of Cali- 

 fornia. 



Panulirus interruptus, Monterey Bay? (San Luis Obispo) -Rosalia Bay, Lower 

 California. 



Cy'clodorippe plana, Monterey Bay? (San Pedro Bay) -Santa Catalina Island. 



Anasimus spinosus, Monterey Bay? (San Pedro Bay)-Cerros Island, Lower 

 California. 



Epialtus bituberculatus, Monterey Bay? (Laguna Beach) -Chile. 



Portunus xantusii, Puget Sound? (Santa Monica Bay) -Chile. 



Ocypode gaudichaudii* , San Francisco Bay? (Lower California) -Chile. 



Three new species, Dardanus jordani, Pylopagurus holmesi, and Homola faxoni, 

 have been added to this paper since this section on ' ' Distribution ' ' was written. 

 Had they been included here the total number of species of littoral record would 

 have been one hundred and eighty-four. 



