326 



BULLETIN OF THE BUREAU OF FISHERIES 



probably perish shortly, whereas during the cold months they survive long enough to 

 spread generally along the trough of the gulf. There is no reason to suppose that 

 S. maxima ever breeds successfully in the Gulf of Maine. 



Fig. 90— Occurrence of the glass worms Sagitla lira and S. maxima. 0, locality records for S. lyra; X. locality records 

 for S. maxima. Contours for 100 and 200 meters. 



Sagitta maxima is as cosmopolitan on the high seas as Eukrohnia (von Ritter- 

 Zahony, 1911) but reaches its maximum abundance at a rather deeper level. Only in 

 high latitudes does it normally rise near the surface, then usually in the persons of 

 young specimens, and it is on such that most of our Gulf of Maine records are based. 



