NO. 2 HARTMAN : QUANTITATIVE SURVEY 221 



on the chart, crustaceans were represented by many amphipods and caprel- 

 lids, and a crab, Heterocrypta occidentalis. Largest species were Polin- 

 iccs and Neanthes brandti; most abundant were Polydorn Icaulleryi 

 (312"^) and Diopatra ornata (37). 



3. Sta. 4806 (no. 28). 1.25 mi from Pt. Vicente light, in 7.5 fms. 

 OPCi took 1.8 cuft of debris with many algae, large tubes of Chaetop- 

 ierus variopedatus and Lima dehiscens in cases. In addition to those 

 listed on the chart, coelenterates were represented by a small anemone 

 (2) and a ceriantharian (1) ; polyclads by two species, nemerteans by 

 three species, oligochaetes by one, and Glottidia albida ( 1 ) ; bryozoans 

 were also present. Amphipods were estimated at 1 1 species and 128 speci- 

 mens, and decapods at two small individuals ; one enteropneust was pres- 

 ent. The largest species was Chaetopterus variopedatus and the most 

 abundant Dorvillea articulate (754 individuals), followed by Chaetop- 

 terus with about 100, Lima dehiscens with 90, Diopatra ornata and 

 Ophiodromus pugettensis with 54 each, Flabelligera commensalis with 

 46, and Lumhrineris cruzensis with 53. 



Numbers of species and specimens totalled : 

 polychaetes 51 species, 1509 specimens 



echinoderms 3 7 



mollusks 22 277 



crustaceans 14 130 



others 12 94 



Total: 102 species, 2017 specimens 



Sub. 3. Sta. 4833 (no. 27). 0.6 mi from Pt. Vicente light, in 8.5 

 fms. OPG took 0.95 cuft of coarse gray sand, which contained chiefly 

 Dendraster excentricus and Chaetopterus variopedatus, also a few small 

 pelecypods. 



4. Sta. 4807 (no. 28). Off Pt. Vicente light, in 9 fms. OPG took 

 2.4 cuft of massed Chaetopterus tubes with gravelly sand. The sample 

 contained nemerteans of 3 kinds and many specimens, a sipunculid, crus- 

 taceans with 1 amphipod, 10 caprellids, and a large brown enteropneust 

 (2), in addition to the animals listed on the chart. The largest and most 

 conspicuous individuals were Chaetopterus variopedatus (ca. 100) and 

 Lima dehiscens (about 40). Other numerous species were Dorvillea artic- 

 ulata, Lumhrineris pallida, Ophiodromus pugettensis, Telepsavus cos- 

 tarum, Tharyx multifilis, and nemerteans of at least 3 kinds. 



