390 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 19 



the sediments. The grab failed to penetrate the bottom, perhaps because 

 the jaws struck hard rock before they closed. 



5. Sta. 7725 (near no. 250). Shelf off Jewfish Pt., in 40.5 fms. The 

 photograph (PI. 10, bottom) shows a silty surface with a few long, 

 ophiuroid arms, many small pits, mounds and low ridges. The sample 

 contained an echinoid and numerous polychaete tubes, together with a 

 ceriantharian (8), a sipunculid burrowing in the foraminiferan, Rhab- 

 damina (2), a chaetognath (15), amphipods (65), a gnathid isopod 

 (1), an anthurid isopod (1), tanaids (12), cumaceans (22), ostracods 

 (41), a shrimp (3), a pycnogonid (2), in addition to those named in 

 the chart. The most abundant species were Aricidea neosuecica (42) and 

 Aricidca lopezi ( 25 ) . 



6. Sta. 7726 (near no. 251). Shelf off Jewfish Pt., in 40 fms. The 

 photograph (PI. 11, top) shows silty sediments overlain by dead shells of 

 Laqueus californicus. Analyses of the sample revealed the presence of 

 more than 100 species and 300 specimens. In addition to those named in 

 the chart, the sample contained a ceriantharian (3), a solitary coral (2), 

 a hydroid stalk ( 1 ) , a nemertean ( 1 ) , a polyclad ( 1 ) , a sipunculid ( 1 ) , 

 a phoronid ( 1 ) , encrusting bryozoans, amphipods of numerous kinds 

 (60"^), a caprellid (1), isopods (5), tanaids (14), cumaceans (3), three 

 kinds of ostracods (13), a shrimp (5), an oxyrhynch crab (3), Scalpel- 

 lum ( 1 ) attached to Phyllochaetopterus tube. The largest animals were 

 Euclymene sp. (PI. 11, bottom) and dead shells of Laqueus. The most 

 abundant species was Peisidice aspern ( 17) . 



7. Sta. 7712 (near no. 260). Slope SE end of Santa Catalina Island, 

 in 133 fms. The photograph (PI. 12, top) shows a coarse black sandy 

 bottom, its surface marked with a broad, shallow, depressed trail in the 

 lower half, a patch of ophiuroid arms in center right, and the surface 

 pitted with pores, mounds and other irregularities. The largest animals 

 were Brissopsis pacifica, (PI. 12, bottom), Eunice a/nericana, Nothria 

 iridescens, Maldane sarsi and tubes of Phyllochaetopterus liniicolus. In 

 addition to those named in the chart, there were a ceriantharian ( 1 ) , a 

 nemertean (1), a sipunculid (2), amphipods of several kinds (12), an 

 anthurid isopod (1), a tanaid (3), a cumacean (1), and three kinds of 

 ostracods (43) . None was conspicuously abundant. 



8. Sta. 7727 (near no. 251). Shelf off Jewf^sh Pt.. in 44 fms. The 

 grab failed to take a sample. The photograph (PL 13, top) reveals a 

 silty sand surface riddled by pores and depressions, suggesting the pres- 

 ence of many animals. 



