PLANKTON OF THE GULF OF MAINE 
349 
western, northern, and eastern parts of the gulf, over deep water as well as 
shallow, and include Browns Bank (fig. 97). We have not found Mitrocoma on 
Georges Bank, though a specimen was towed in the basin between the latter and 
Fig. 97. — Occurrence of the hydromedusa Mitrocoma cruciatar ®, locality records, February to June; X. July and August 
Cape Cod on July 8, 1913. Thus, the few locality records for Mitrocoma roughly 
parallel those for Phialidium (p. 350) in their geographic distribution, and so large 
a percentage of the captures have been made over one part of the basin or another 
8951—28 23 
