Date of Award


Document Type


Degree Name

Master of Science (M.S.)


Graduate School

First Advisor

James A. Blake

First Committee Member

Edmund H. Smith

Second Committee Member

Victor Loosanoff

Third Committee Member

Steven Obrebski


Two genera, Pachyceles and Petrolisthes, and five species of the Porcellaniae occur on the California coast north of San Francisco. Of the five species only one has had its larval development described (Pachycheleas rudis). The purpose of the present study is to describe the remaining four species and to provide a key to the species level for the larvae of northern California Porcellanidae.



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