BENTHIC AMPHIPODA — BARNARD 



is an extremely abundant deep-shelf species in California and is 

 replaced in bathyal depths by its anoculate subspecies, A. m. unsocalae. 

 Paraphoxus obtusidens is a paneastern Pacific eurythermal species 

 ranging from the subarctic into the tropics. It scarcely submerges to 

 the south, but it may occur in warm latitudes primarily in areas of 

 upwelling. 



TABLE 1. — Metric depths of stations in Monterey Bay shown in figure 1 (uncor- 



rected for tidal levels). 



station 



6425 



6426 



6427 



6428 



6429 



6430 



6431 



6432 



6433 



6435 



6438 



6439 



6440 



6442 



6443 



Depth 



84 



87 



85 



87 



82 



93 



106 



109 



139 



115 



107 



101 



96 



103 



Table 2. — Frequency of 58 species of Amphipoda in Monterey Bay in depths of 

 50-139 m, with percent of restriction of each species to this depth zone (third 

 species, based on 33 samples, eliminated in all calculations described in text; 

 NSS = not statistically significant). 



