334 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 19 



in diversity and abundance by small crustaceans, especially amphipods, 

 ostracods and cumaceans. 



5. Sta. 4045 (near no. 259), in 57 fms. OPG took about 2 liters of 

 sandy debris with stony hydrocoral skeletons, broken shells, a large bris- 

 sopsid and many animals. The largest individual was Spatangus califor- 

 nicus, which measured 46 mm in diameter. Most conspicuous were /////- 

 phiodia digitata, with 43 individuals, and a large Thelepus setosus. Shells 

 of Bittium (snail) had hydranth colonies. Crustaceans were small, in- 

 cluded a pagurid, cumaceans, amphipods, isopods and ostracods. 



6. Sta. 3615 (near no. 259), in 60 fms. OPG took 0.63 cuft of green 

 shelly sand, with rock, white coralline rubble, and much diversified life. 

 In addition to those animals listed in the chart, the sample contained a 

 small amount of sponge, a solitary coral, sand covered anemones, a smooth 

 brown-spotted anemone, a nemertean, and a sipunculid. Crustaceans in- 

 cluded many amphipods, at least four kinds of isopods, 50 or more ostra- 

 cods, crabs with eight pagurids, ten dromiids, a spider, and another crab. 

 The most conspicuous animals were echinoderms: Brissopsis pacifica 

 (4), Lovenia californicus (2), and Aniphipholis squaniata (21). The 

 most abundant and diversified were polychaetes. 



7. Sta. 2348 (near no. 260), in 75 fms. OPG took gray-green sand, 

 rock, coralline and shelly rubble, with few living animals. The most 

 abundant animal was Nothria stigniatis, with more than 100 specimens. 

 Most conspicuous were two brissopsids, small ophiuroids, and a holo- 

 thurian. 



8. Sta. 3616 (near no. 260), in 88 fms. OPG took 0.18 cuft of glau- 

 conitic white shelly sand and rubble with trace of siliceous sponge. The 

 screenings retained no large animal but numerous small ones, with poly- 

 chaetes the most abundant and diversified. The most conspicuous was 

 Chloeia pinnata (25). Amphipods were numerous and diversified, fol- 

 lowed by ostracods, isopods, small crabs, and a pagurid, with six indi- 

 viduals, in dead shells of Nassarius. 



9. Sta. 3617 (near no. 260), in 93 fms. OPG took white coralline 

 sand and silt, the sand compacted but friable. The largest animals were 

 single individuals of Brissopsis pacifica and Brisaster tozvnsendi ; most 

 abundant were species of Iharyx, Nothria elegans, and amphipods. 



Avalon Harbor 



1. Sta. 3601 (near no. 239), in 18 fms. OPG took 0.69 cuft of gray 

 shelly sand with flocculent debris, many animals, with large tubes of 

 Chaetoptcrus, Tchpsavus and Phyllochactoptcriis. Coelenterates included 



