118 



IV-9, Sta. 3177=55, In 1800 feet. OPG took 2.14 cuft of green 

 mud. The screenings consisted of 2 translucent pale echiuroids, 2 or 

 more nemerteans and p olychaetes including: 



ampharetids Prlonospio 



cirratulld a large terebellid 



Goniada 



IV-10. Sta. 3176-55. In 2385 feet. OPG took 1.95 cuft of green 

 mud, sand and shale. The screenings consisted of about 13 liters of 

 black rubbly soft muddy to shaley debris, and about a liter of 

 foraminif erans with fine dark rubble. The shaley lumps are more or less 

 penetrated by larger (perhaps pholad) to smaller (perhaps sipunculid) 

 burrows o There are 2 larger clumps of siliceous sponge, and a dead 

 valve of pecten with fenestrated valves. The living animals are few. 

 Mollusks include? 



Luc inoma annulata - 1 living and 1 dead shell 



Mitrella 



Macoma 

 a very small ophiuroid 

 orbiniid polychaete 



SUMMARY OP IV-1 to 10, The fauna in Santa Monica Canyon, in 600 to 

 2385 feet, resembles that in Redondo Canyon (zone V) but is less 

 diversified and sparser. 



V-1, Sta. 2725-54, In 345 feet. OPG took 1.13 cuft of coarse 

 green shelly mud with some rounded stones. The screenings consisted 

 of about 8 liters of fine to coarse gravel, shell fragments and various 

 animals and matted masses of white spicules, like those of sponge, 

 but no living sponges, 

 Echinoderms include; 



Amphiacantha amphacantha - 8 



Amphichondrius granulosus - 1 



Amphiodia ( Amphlspina ) digitata - 39 



Amphiodia ( Amphlspina ) urtica - 5 



Amphioplus he xa can thus - 3 



Amphioplus strongyloplax - 3 

 Crustaceans include many diversified entomostracans 

 Mollusks few, includes 



scaphopodS;, pelecypods end gastropods 



some chaetoderm 

 One sea whip 



Echiuroidoa - 1 large deep green 

 Polyolad - 1 

 Polychaete s Include: 



Aglaophamus onuphids, in tubes 



Brada Pectlnarla calif orniensis 



Haploscoloplos elongatus polyodontid tube - 1 larger 



Laonice slgallonlds 



Lumbrineris , 1 larger Sternaspis 



maldanids Terebellides 



Nephtys , perhaps f erruginea and others 



