INTIMATE STRUCTURE OF THE SWARMS 



249 



LENGTH RANGE 



Fig. 52. Sexual dimorphism and developmental condition of the sexes in swarms oi E. superba, showing dominance 

 of the male giving way to dominance of the female after pairing has been accomplished (See legend to Fig. 50). 



samples of the younger and older swarms. In general it will be seen that, up to a point, the dominance 

 of the male, detectable even in swarms consisting of Sixth Furcilias and very early adolescents 

 (Fig. 50, Stations WS 295, 463, 459, 454 and 492), tends to become more pronounced as development 

 proceeds. It does not, however, persist throughout the life of the swarm, tending to disappear when 

 pairing (Fig. 52, Stations WS 152 and WS 373) has been successfully accomplished and the 

 majority of the females, being impregnated, have reached stage 6. From then until it becomes gravid 

 the female rather than the male would appear to be the dominant partner. 



28 



