NO. 5 BARNARD : AMPHIPODA 41 



phoxus epistomus, 16.1 ; Paraphoxus obtusidens, 15.9; Paraphoxus sten- 

 odes, 14.3; Aoroides columbiaej 14.0; Ampelisca pacifica, 13.6; Photis 

 lacia, 12.0; Acuminodeutopus heteruropus, 12.5; Ampelisca piigetica, 

 10.8; Eurystheus thompsoni, 7.7; Listriella goleta, 7.3; Byblis veler- 

 onis, 7.2. 



TABLE 12 



Abundant Amphipoda of the coastal shelf and upper slope of south- 

 ern Cah'fornia, 92-183 m, based on 48 samples, listed in rank, with 

 number of individuals/m^. 



Paraphoxus bicuspidatus, 98; Ampelisca macrocephala, 84; Ampel- 

 isca romigi, 45 ; Heterophoxus ociilatus, 35 ; Metaphoxus frequens, 33 

 Photis lacia, 27; Ampelisca pacifica. 21 ; Phoxocephalus homilis, 19.0 

 Westwoodilla caecula & acutifrons, 15.6; Ampelisca brevisimulata, 13.4 

 Orchomene decipiens, 12.0; Nicippe tiimida, 11.0; Ampelisca pugetica, 

 10.0; Protomedeia articulata, 9.6; Lysianassa holmesi, 9.2; Paraphoxus 

 similiSj 8.6; Paraphoxus robustus, 8.3; Urothoe varvarini, 8.1 ; Pardisy- 

 nopia synopiae, 7.1 ; Lysianassa oculata, 6.5. 



TABLE 13 



Abundant Amphipoda on bottoms of 2-5 m on the coastal shelf of 

 southern California (after J. L. Barnard 1963, Table 16), with num- 

 bers of individuals/m^. Phycophilous species are marked with asterisks. 



Paraphoxus epistomus, 55; Synchelidium spp., 2 species, 31 ; Mandi- 

 bulophoxus uncirostratus, 30 ; Photis lacia, 25 ; Paraphoxus bicuspidatus, 

 aberrant form, 25 ; Paraphoxus abronius, 9.7 ; Eohaustorius washing- 

 tonianus, 9.5 ; Ampelisca compressa, 9.2 ; * Aoroides columbiae, 7.5 ; 

 Monoculodes hartmanae, 4.9; *Ampithoe sp., 4.4; Paraphoxus variatus, 

 4.1 ; *Batea transversa, 4.1 ; Paraphoxus heterocuspidatus, 3.8; Ischyro- 

 cerus pelagops, 3.0; *Photis spp. juveniles, 2.9; Photis brevipes, 2.7; 

 Atylus tridens, 2.6; Megaluropus longimerus, 2.3; Paraphoxus jonesi, 

 2.0; Argissa hamatipes, 1.4; Ampelisca cristata, 1.0; Paraphoxus lucu- 

 brans, 1.0; Tzro« biocellata, 1.0; Acuminodeutopus heteruropus, 0.9; 

 *Amphilochus picadurus, 0.6 ; Paraphoxus stenodes, 0.6 ; Paraphoxus 

 obtusidens, 0.5 ; Ericthonius brasiliensis, 0.5 ; Parapleustes pugettensis, 

 0.5; Uristes entalladurus, 0.4; *Eurystheus thompsoni, 0.4; Cerapus 

 tubularis, 0.4. 



