no 



MORPHOLOGY OF INVERTEBRATE TYPES 



DE 



YD. 



..YE 



Fio. 24. Male reproductive organs of Aiilostotmim after Brandes (com- 

 bined from two figures and somewhat modified). P, penis; PO, penis pouch; 

 PR, prostata; CG, Cowper's gland; SR, sperm reservoir; DE, ductus ejacu- 

 latorius; VS, vesicula seminalis; VD, vas deferens; VE, vas efferens; T, testis. 



