Table 4. Biota of natural bottora sediment samples. --Continued. 



Station No. Ill 2 



Grab sample replicate No.: ^ 2 3 l' 



Ta;(on Depth Cm): ^^ ■'^ 13.7 13-7 10.7' 1. 



ARTHROPODA CRUSTACEA 

 AMPHIPODA 

 Ampelisca cristata 1 



Paraphoxus obtusidiens 2 2 



Synchelidium sp. 2 1 



Monoculodes cf. hartmanae 1 



iAorides columbiae 1 



Metaphoxus frequens 

 Paraphoxus heterocuspidatus 1 



DECAPODA 

 Cancer sp. (juv.) 

 Pinnotheridae (juv.) 1 1 



CUMACEA 

 Diastylopsis tenuis 6 



CycJaspis sp.-^ 1 



Hemilamprops californica 1 12 



Lamprops cf. carina ta 2 1 



OSTRACODA 

 Asteropella sp. 



ISOPODA 

 Serolis carinata 



ECHINODERMATA 

 OPHIUROIDEA 

 Amphiodia digitata 1 l 



A. sp. (juv.) 2 



Amphipholis squamata 

 Amphiodia occidentalis 4 



HOLOTHUROIDEA 

 Unid. holothurian 1 



CHORDATA 

 CEPHALOCHORDATA 

 Branchiostoma calif orniense 1 5 



Total species 20 17 25 7 23 



Total individuals 38 30 35 16 35 



Simpson' s index of 



diversity'' 0.94 0.92 0.95 0.79 



Wet weight (gm) 

 Polychaetes 



A part of this sample was. lost 



2 



A hard bottom-type species. 

 3 



Undescribed species 



^D=l - >■ .2 



0.42 



0.19 



0.19 



0.01 



0.22 



0.18 



0.44 



0.72 



1.20 



0.02 



0.86 



0.22 



'%l fpl^ 



61 



