PLANKTON OF THE GULP 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 0, 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 



