110 MORPHOLOGY OF INVERTEBRATE TYPES 



P. 



DEj PQ 



.VE 



FIG. 24. Male reproductive organs of Aulostomum 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. 



