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SEXUAL DIMORPHISM 



These differences are illustrated in Fig. 31, representing the 

 male and female of Euchccta marina, which is common in 



Fig. 31. Euchceta marina, a Mediterranean Copepod magnified. A, Male ; B, Female. Only 

 a portion of the two long bristles at the end of the body in the female is shown. 



the Mediterranean. The fifth pair of feet, which is wanting 

 in the female, is strongly developed in the male, and equals 

 in length the anterior portion of the body. Each foot of this 



