Date of Award


Document Type


Degree Name

Master of Arts (M.A.)



First Advisor

Alden E. Noble

First Committee Member

John R. Arnold

Second Committee Member

Robert Dempster

Third Committee Member

Robert Menzies


Very little is known of the development, life history, economic importance, of biological relationships of larval trematodes, especially in their molluscan and arthropod hosts on the Pacfic Coast. The comparatively few contributions to our knowledge have been from scattered and fragmentary observations. The purpose of this study was to expand our knowledge and to lay a foundation for further work on trematode life cycles in marine organisms. The area selected for special investigation was Nick's Cove, Tomales Bay, California.



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