122 NATHAN FASTEN. 



PLATE I. 

 Explanation of Figures. 



1. Male and female copepods in position for copulation. The female is attached 

 to the gill (g.) by the funnel-like attachment filament (a. /.). The male is attached 

 to the female near the genital pores (g. p.*). X 57- 



2. Side view of a mature male showing the position of the reproductive organs 

 (t., v. d., and sp.). X 120. 



3. Enlarged view of the reproductive organs of the male shown in Fig. 2. X 218. 



