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Date of Award


Access Type

Open Access Dissertation

Document type


Degree Name

Doctor of Philosophy (PhD)

Degree Program



The study of the subfamily Psammocharinae has formed a portion of the work done by the writer in the Entomological Laboratory of the Massachusetts Agricultural College for the degree of Doctor of Philosophy, under the supervision of Dr. Henry T. Fernald to whom the writer wishes to express his deep appreciation and indebtedness for the kind assistance and encouragement given him. To Dr. G.C. Crampton, also of this department, the writer is under many obligations and is very grateful for the aid given him in this work.