4 U.S. NATIONAL MUSEUM BULLETIN 258 



Skogsberg and Vansell (1928) made a notable Calif ornian contri- 

 bution in their study of the biology of Polycheria osborni, a taxon 

 later to be submerged, perhaps erroneously, in the Polycheria ant- 

 arctica-complex. Alderman (1936) at Moss Beach (not Moss Landing!) 

 and Thorsteinson (1941) in Puget Sound continued to find new species 

 and unravel old problems. Schellenberg (1936) described two species, 

 one from British Columbia and one from the Galapagos Islands. 



The British Columbian fauna just north of Puget Sound has been 

 the subject of papers by Bousfield (see Literature Cited) and Mills 

 (1961, 1962), the latter treating atylids and oedicerotids. Bousfield 

 has made important contributions to the systematics of Californian 

 beachhoppers, those Amphipoda of the genera Orchestia and Orches- 

 toidea (not treated in the present report). Beachhoppers are the 

 Amphipoda most familiar to university students and often are the 

 subject of unpublished theses and reports. 



The work of Barnard, like that of Holmes (1908) and some of 

 that of Shoemaker, has been concerned primarily with subintertidal 

 Californian Amphipoda. The valuable synopsis of Californian Lysian- 

 assidae published by Hurley (1963) also treats primarily of subinter- 

 tidal faunas. 



Since 1853 numerous species of Amphipoda described from ex- 

 trinsic seas have been found in Californian waters, some of these 

 species being ubiquitous and others of pan-boreal or tropicopolitan 

 distribution. They do not form an integral part of the history of 

 names of Californian Amphipoda. 



Materials and Methods 



Seven accessible rocky intertidal localities were surveyed as follows : 

 Carmel Point, Cayucos (5 km. north of the town), Hazard Canyon 

 reef, Goleta (Coal-Oil Point precisely), Pt. Dnme, Corona del Mar 

 (2 km. south of breakwater), and La Jolla (between 3 and 5 km. 

 south of town). At each locality one or more gridworks were estab- 

 lished by the placement of crossed strings 3 m. apart in the lower 

 intertidal during ebb tides of minus 1.1 ft. or greater (table 1). Samples 

 of a surface area of % 4 th or }a th square m. were taken from each 

 gridwork intersection and preserved in a mixture of formaldehyde 

 and seawater. At least one gridwork at each locality was placed in 

 the densest stands of flora in the Phyllospadix-pelvetiid zone as 

 shown in figure 114 of Hedgpeth's revision of "Between Pacific 

 Tides" (1963). Generally these floras occur in the zone below mean 

 low water. The seaward extent of the sampling sites in the major 

 grids lay in the relatively pure stands of surf grass, Phyllospadix 

 sp., and the landward extent in mixed pelvetiid algal floras. 



