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ALLAN HANCOCK PACIFIC EXPEDITIONS 



VOL. 19 



sipunculids, many kinds of polychaetes, resembling those in adjacent 

 samples, Heterocrypta occidentalis, and many other smaller kinds. 



11. Sta. 4802 (near no. 27). Near Marineland, in 12 fms. OPG 

 took 2.2 cuft of mixed gravel and sand, tubicolous polychaetes and 

 massed cases of Lima. In addition to those listed on the chart, there were 

 two small anemones, a polyclad (3), two kinds of nemerteans, a sipun- 

 culid, three kinds of amphipods (7), two caprellids (8), a tanaid (1), 

 Heterocrypta sp. (3). Most conspicuous species were Chaetopterus vario- 

 pedatus and tubes of Polyodontes; most abundant were Ampharete 

 (100"^), and Flabelligera commensalis, Lumbrineris pallida, Ophiod- 

 romus pugettensis and Lima dehiscens, each with more than 10. 



Numbers of species and specimens totalled : 

 polychaetes 31^ species, 300"^ specimens 



echinoderms 1 1 



mollusks 14 103 



crustaceans 7 19 



others 4 10 



Total: 57^ species, 433^ specimens 



12. Sta. 5030 (near no. 43). 2.7 mi from Pt. Fermin, in 12 fms. 

 OPG took 1.13 cuft of gray and black sand with tubes of Chaetopterus. 

 The sample contained a ceriantharian, small nemerteans (5), a sipun- 

 culid (5), an oligochaete (10"^), five kinds of amphipods (20), a caprel- 

 lid (3), two kinds of isopods (8), Heterocrypta (1), a shrimp (4), a 

 pycnogonid ( 1 ) , an enteropneust ( 1 ) . Largest and most conspicuous 

 species was Chaetopterus ; most abundant were Exogone uniformis (78), 

 Dorvillea articulata (70), Melinna denticulata (35), and Conus cali- 

 fornicus {^^) . 



Numbers of species and specimens were estimated at : 

 polychaetes 47+ species, 468'^specimens 



echinoderms 3 20 



mollusks 24 128 



crustaceans 10 33 



others 7 24 



Total: 91 "^species, 673+ specimens 



13. Sta. 5541 (no. 28). 8.8 mi from Pt. Fermin light, in 12 fms. 

 OPG took 1.63 cuft of coarse black sand with odor of hydrogen sulfide. 



