THE DEVELOPMENT AND LIFE-HISTORY OF KRILL 



"3 



Total adolescent ^'s 3073 

 Total adult ^'s 75° 



Total adolescent 9's 2933 

 Total adult $'s 1273 



Total ,^'s 



3823 



Total ?'s 



4206 



N.B. Adolescent total does not include Fraser's 124 specimens. 



Stage 



Table 7. Growth stages in the female 



Internal structures 



Primitive condition. Unlobed saddle-shaped 



ovary. Oviducts clearly visible 

 Ovary becomes lobed. Oviducts become wider 



Ovary extends down towards the legs, filling i of 

 thoracic cavity 



Stage 



A 



B 

 C 



External structures 



Thelycum either not visible, or represented only 

 by a straight band across the sternum 



Two small coxal outgrowths can be distinguished 

 at each end of sternal band 



Thelycum half-developed: coxal part larger than 

 sternal part 



