Reproduction in Sagitta Elegans 



103 



they come near the surface in the cold part of the year, they are then 

 to be found commonly, and even in large numbers, far up the estuaries. 



Season of Maturity of Eggs. 



In order to determine the season of maturity of the eggs, an exam- 

 ination was made of the condition of the ovaries in adult Sagittae taken 

 in approximately monthly hauls from July of 1916 to August of 1917 

 at "Prince" station no. 1, where Sagittae usually occur in fairly large 

 numbers, and of a haul in September of 1917 at "Prince" station no. 5. 

 Where large numbers were present in the hauls only 10 were examined. 

 The recorded diameter of the eggs in each individual is the average of 

 seven measurements, only the largest cells being taken. The average 



TABLE I. 



* After the depth the letter T indicates that a tow was made, and V that the 

 net was hauled vertically. 



