NO. 2 



hartman: quantitativf survey 



259 



Numbers of species and specimens totalled : 



polychaetes 28 species, 159 specimens 



echinoderms 2 11 



mollusks 4 7 



crustaceans 8 36 



others 5 22 



Total : 



47 species, 235 specimens 



20. Sta. 5754 (near no. 62). 1.65 mi from Los Angeles light, in 16 

 fnis. OPG took 0.88 cuft of coarse dark gray to black sand, with woody 

 debris and many animals. Wet weights totalled 43.4 grams, of which 

 polychaetes were 13, echinoids 10.4, mollusks 9.2, holothuroids 4.6, anem- 

 ones 3.0, nemerteans 2.9 grams, and others less than 1.0 gram. In addi- 

 tion to those listed on the chart, the lot contained a ceriantharian (1), 

 a sand-covered anemone (12), ?IIarenactis (1), three nemerteans (35), 

 Glottidia nlbida (4), seven amphipods (12), two isopods (4). two ostra- 

 cods (8), three cumaceans (23), Callianassa (1) and Ileterocrypta (1). 

 Largest individuals were Lytechinus anainesus (12), and Pentainera 

 psi'udopopulifera (2) ; most conspicuous or numerous species were Pher- 

 usa capulnta (10), Tharyx tesselata (275), Lysippe annectens (15) and 

 Piionospio pinnatn (20). 



Numbers of species and specimens totalled : 

 polychaetes 42 species, 585 specimens 



echinoderms 2 14 



mollusks 5 14 



crustaceans 16 49 



others 7 54 



Total : 



72 species, 716 specimens 



21. Sta. 5751 (near no. 63). 4.8 mi from Los Angeles light, in 16.5 

 fms. OPG took 0.31 cuft of gray sand with animals. Li addition to those 

 listed on the chart, there were a ceriantharian (1), a polyclad (1), two 

 nemerteans (4), Glottidia albida (12), four amphipods (26), a tanaid 

 (4), cumaceans (4), ostracods (21), and Heterocrypta occidentalis (1). 

 Largest individual was Astropecten calif ornicus (2), and most conspicu- 

 ous Ophiothrix spiculata (144) ; high counts occurred also in Aricidea 

 lopezi (96), Prionospio malnigreni (62), Onuphis nehulosa (52) and 

 Mclinna dcnticulata (45). 



