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or namedo Solenogasters (worm-like mollusks) have been 

 found in a wide variety of bottoms and at different 

 depthSo They are currently being studied by specialists 

 in Europe who have tentatively identified 10 to 20 

 different kinds of Chaetoderma , a Limif ossor and a 

 neomeniid, all of which represent either new records or 

 unknown kinds o 



Echinoderms (especially brittle stars, sea urchins, 

 seastars and cucumbers) are rather well known (Personal 

 communication, P„ Co Ziesenhenne) and were found to be 

 represented by 58 species. The brittle stars were found 

 to be particularly characteristic in some parts of the 

 bay (see Analyses below). 



Small mollusks (pelecypods and gastropods) are 

 present in considerable numbers where the effects of 

 pollution are lowo Because of hard shelled parts they 

 are easily collected, but their specific determinations 

 are made with difficultyo Their systematic study is in 

 progress and when completed these groups may show sig- 

 nificant patterns of distribution and abundances In the 

 adjacent San Pedro area, the shelled kinds comprise about 

 132 categories (Personal communication, Donald Wilson), 

 In a recent study of mollusks from the offshore islands 

 of southern California (Berry, 1956), 91 species were 

 reported from 11 to 58 fathoms, dredged from muddy and 

 algal bottoms. The number of individuals in single dredge 

 hauls ran as high as 198 for Amphissa undata (small snail). 



