368 



ALLAN HANCOCK PACIFIC EXPEDITIONS 



VOL. 19 



Echinodermata from Santa Catalina Island (continued) 



Sclerasterias heteropaes 

 Spatangus californicus 

 Amphipholis squamata . . 

 Molpadia intermedia . . . 

 Amphioplus strongyloplax 

 Brisaster townsendi . . . 

 Brissopsis pacif ica . . . 



ophiuroids 



Amphiacantha amphacantha 

 Leptosynapta albicans . . 

 Parastichopus californicus 

 Pentamera pseudopopulif era 



Molpadia sp 



Ophionereis eurybrachiplax 

 Ophiacanthia diplasia . . 



Isthmus Cove 

 12 3 4 5 6 7 



Howl. Land. 

 12 3 4 



+ - - 

 + + - 



West End 

 12 3 4 5 6 



- + + - - 



- + " + + 

 + + - - - 



Mollusca from Santa Catalina Island, 



showing distributions by profiles, 



from Isthmus Cove, Howlands Landing, and West End. 



Acteon punctocoelata 

 A mygdalum pallidulum 

 Axinopsida serricata 

 Cylichna diegensis 

 Elaeocyma halocydne . 

 Eulima californica 

 Lyonsia californica . 

 Nemocardium centrof ilosum 



Nucula linki 



Nuculana taohria 



Parvilucina tenuisculpta 



Saxicava arctica 



Sinum scopulosum 



+ - - - 



+ _ _ _ _ 



+ _ _ _ _ 



