BIOLOGICAL SURVEY 



OF THE 



MOUNT DESERT REGION 



Directed by 



WILLIAM PROCTER 



Besearch Associate in Marine Biology, 



Academy of Natural Sciences 



of Philadelphia 



PART 4 



VERMES 



Three New Species of Worms belonging to 

 the Order Echinodera 



By CHARLES H. BLAKE 



Massachusetts Institute of Technology 



From the Laboratory of 



The Biological Survey of the Mount Desert Region 

 Corfield, Bar Harbor, Maine 



Published by 



THE WISTAE INSTITUTE OF ANATOMY AND BIOLOGY 



Philadelphia 



1930 



