103 



II-6, Sta. 3165-55, In 132 feet, OPG took 2,83 cuft of black mud 



with strong odor of HgS, The screenings consisted of fine black sand, 



a stick and small bits of plant debris weighing 1050 grams. 



Echinoderms include only 3 very small ophluroids 



Crustaceans include; 



pinnixid crab, commensal with Schizocardium , an enteropneust - 59 

 amphipodSj presumably of one kind - 18 

 ostracod - 1 



Mollusks include? 



Macoma sp, - 1 large, weighing 31.7 grams (wet weight) 

 many smaller gastropods and pelecypods of various kinds 



Nemerteans - 4 or more 



Nematode =- 1 or more 



Schizocardium , an enteropneust - at least 20 



Polychaetes include? 



Anclstrosyllis - 26 Leocrates - 1 



Brada - 6 Nephtys f erruginea - 2 



Capitella capitata - 56 other Nephtys 



other capitellids Nereis procera - 3 



Chloeia Pectinaria c alif orniensis - 2 



Cossura Candida - 4 Pholoe - 2 



Glycera - 7 Prlonospio ? cirrifera - 7 



Haploscoloplos elongatus Prionospio pinnata - 8 



Harmothoe lunulata var, - 8 Prionospio , other spp. - many 



Laonice ■= 2 Telep'savUs sp, - 3 In tubes 



Spiophanes 



SUMMARY." The largest individual is Macoma , the most conspicuous is 

 Schizocardium . Conspicuously lacking are echinoderms, diversified 

 smaller crustaceans , Glottidia , and others. The sample is estimated 

 to contain 33 species with 275 individuals, 



II-=7. Sta, 2359='53, In 185 feet, OPG took 0.63 cuft of gray sand 

 and clay. The screenings consisted of many polychaetes, ophluroids, 

 echiuroids^ arenaceous f oraminif erans j, and many diversified kinds of 

 animals, 

 Echinoderms, totalling about a pint, include: 



Amphlodia ( Amphl spina ) digit ata - 388 



Amphiphoils squamata - 43 



Astropecten californlcus - 2 juveniles 



holothurolds - a long purple and a smaller white papillated kind 

 Crustaceans includes 



amphipods - more than 100 



ostracods - about 12 with 2 or 3 species 



isopods " 9 or more 



cumaceans - 5 or more 

 Mollusks include many smaller pelecypods and gastropods with: 



Cadulus 



Cylinchna dlegensis 



chaetoderm 



Volvulella 



and others 

 Glottidia albida - 1 larger and 6 small 

 Nemertean - several 



