NO. 2 HARTMAN : QUANTITATIVE SURV'EY 291 



those named on the chart, the sample contained Monobrachium parasitum 

 ( 1 1 colonies on Pseudopythina chacei) , a nemertean (2) , a polyclad ( 1 ) , 

 a sipunculid (4), ten amphipods (137), three isopods (11), tanaids (8), 

 three ostracods (about 400), and four cumaceans (32). Largest species 

 were Nephtys glabra and brissopsid urchins ; most abundant were Chloeia 

 pinnata (102) and A niphiodia iirtica (100). Peak numbers were at- 

 tained also by Tharyx t/ioni/aris (70), Paraonis gracilis (58), Pixta 

 moorei (36), and Adontorhina cyclia (35). 



Numbers of species and specimens totalled : 

 polychaetes 46 species, 667 specimens 



echinoderms 7 138 



mollusks 18 130 



crustaceans 23 593 



others 4 18 



Total: 98 species, 1546 specimens 



4. Sta. 4778 (no. 184). S of Laguna Beach, in 100 fms. OPG took 

 2.96 cuft of green mud. Animals included 8 amphipods (20), an isopod 

 (3), a cumacean (3) and an ostracod (1), in addition to those named 

 on the chart. Largest individuals were Molpadia intermedia, Pista dis- 

 juncta and Travisia pupa. Most abundant or conspicuous were Chloeia 

 pinna/a (56), A inphiodia iirtica (44), and Pcctinaria calif ornicnsis (37). 



Numbers of species and specimens totalled : 

 polychaetes 21 species, 137 specimens 



echinoderms 6 55 



mollusks 2 8 



crustaceans 1 1 27 



1 otal : 40 species, 227 specimens 



Sub. 4. Sta. 2177 and 2438 (no. 267). Outermost end of the San 

 Pedro area, in 172 and 153 fms. OPG took sandy mud (2177) and rock 

 (2438) with attached tubes of unnamed polychaetes, representatives of 

 a polynoid. a sphaerodorid and a maldanid. 1 he sample from sandy mud 

 contained many polychaetes with (chloeia pinnata the most conspicuous; 

 three kinds of echinoderms, A inphiodia urtica (18), Aniphiura arcystata 

 ( 1 ), and Brissopsis pacifica (5), and five mollusks: (Jaduliis tolniiei (8), 

 Cardita ventricosa (7), Cyrilla niinuta (41), Solanien columbianum 

 (2) and Tellina carpcnteri (16). 



Sub. 4. Sta. 2987 (no. 174). 13.7 mi SE of Los Angeles light, in 

 177-189 fms. The biological dredge took rocks and echinoderms with 

 siliceous sponge and a lamprey eel. 



