GAMMARIDEAN AMPHIPODA 35 



Table 7. — Cayucos, California, July 1, 1961, grid of 28 surface samples in Phyl- 

 lospadix-pelvetiid zone, station 38 A-E, the most abundant species listed 

 in rank, with individuals per square meter. 



Hyale rubra frequent, 7,507; Aoroides columbiae, 2,622; Photis brevipes, 1,671; Photis bifurcata, 1,362; Callio- 

 piella pratti, 1,304; Microjassa litotes, 956; Photis conchicola, 814; Parallorchestes ochotensis, 727; Elasmopus 

 antennatus, 695; Jassa falcata, 633; Oligochinus lighti, 568. 



Table 8. — Hazard Canyon reef, California, December 8-9, 1961, grid of 18 

 samples on surface of flat platform above surge channel in algal turf, station 

 42 C-H, the most abundant species listed in rank, with individuals per square 

 meter. 



Oligochinus lighti, 2,677; Hyale rubra frequens, 419; Ampithce poller, 330; Parapleustes nautilus, 200; Parallor- 

 chestes ochotensis, 105; Elasmopus rapai mutatus, 97; Aoroides columbiae, 89. 



Table 9. — Hazard Canyon reef, California, December 8-9, 1961, the most 

 abundant amphipods in holdfasts of intertidal kelps, Macrocystis sp., Egregia 

 sp., and Laminaria sp., listed in rank from samples 42-C-7, 42-T-5, 42-T-7, 

 43-B-3, with average number of individuals per sample. 



Hyale rubra frequens, 41; Photis conchicola, 32; Elasmopus holgurus, 24; Elasmopus rapai: mutatus, 21; Para- 

 pleustes pugettensis, 19; Oligochinus lighti, 19; Aoroides columbiae, 18; Eurystheus thompsoni, 16; Ericthonius 

 brasiliensis, 12. 



Table 10.— Goleta (Coal-Oil Point), California, July 2, 1961, grid of 18 surface 

 samples in Phyllospadix-pe\vetiid zone, station 39 H-K, the most abundant 

 amphipods listed in rank, with individuals per square meter. 



Hyale rubra frequens, 10,300; Lysianassa macromerus, 1,588; Ischyrocerus sp. A, 705; Jassa falcata, thick, 236; 

 Pontogeneia rostrata, 234; Jassa falcata, thin, (31). 



Table 11. — Point Durae, California, February 5-7, 1963, 4 samples of short 

 brown algae near surf and at edge of tidepool, 47-C-l, C-3, D-l, D-2, list of 

 all species, with individuals per square meter. 



Hyale rubra frequens, 4,355; Pontogeneia rostrata, 1,585; Aoroides columbiae, 1,450; Lysianassa macromerus, 

 1,020; Parallorchestes ochotensis, 340; Stenothoe estacola, 176; Paraphoius spinosus, 154; Ampithoe poller, 154, 

 Ampithoe sp., northern sp., 44; Parapleustes pugettensis, 44; Amphilochus neapolitanus , 33; Gitanopsis lilordes; 

 33; Ericthonius brasiliensis, 11; Jassa falcata, 11; Melita dentata, 11. 



Table 12. — Point Dume, California, February 5-7, 1963, grid of 5 samples of 

 coralline algae in a surge channel, 47-B-l, B-2, B-3, B-4, B-5, list of all 

 species, with individuals per square meter. 



Hyale rubra frequens, 10,400; Pontogeneia rostrata, 1,480; Aoroides columbiae, 1,390; Ampithoe poller, 1,373; 

 Lysianassa macromerus, 1,285; Parallorchestes ochotensis, 555; Stenothoe estacda, 330; Elasmopus sp., juvs., 

 255; Amphilochus neapolitanus , 255; Parapleustes pugettensis, 158; Photis sp., juvs., 35; Paraphorus spinosus, 

 18; Ericthonius brasiliensis. 18; Podocerus brasiliensis, 9; Melita sulca, 9; Microjassa litotes, 9. 



Table 13. — Point Dume, California, February 5-7, 1963, 5 quantitative samples 

 of peivetiid zone, each sample with 1-2 clumps of the dominant brown 

 alga and associates, 47-G-l, G-2, G-3, G-4, G-5, list of all species, with 

 individuals per square meter. 



Hyale rubra frequens, 1,360; Paraphoius spinosus, 343; Jassa falcata , thin, 229; Parallorchestes ochotensis, 167; 

 Paraphorus heterocuspidatus, 44; Ampithoe ''.tea, 35; Elasmopus sp., juvs., 18; Lysiannassa macromerus, 18; 

 Paraphoius obtusidens, 18; Ischyrocerus sp. B, 9; Photis sp., juvs., 9. 



