256 PROCEEDINGS OF TUE ACADEMY OF 



Fig. 5. Genitalia of Helix Jidelis, Gray. 



1. Testicle. 



2. Epidicl3'mis. 



4. The prostate gland. 



5. The sac of the penis. 



6. The retractor muscle of penis. 



7. The vas deferens. 



8. The oviduct. 



9. The genital bladder. 



10. The exterior orifice of genitalia. 



11. The ovary. 



12. Tlie prepuce. 



13. Vaginal prostate. 



14. Rudimentary dart sac? 



15. The flagellum, which contains a capreolus. 



16. The duct of the genital bladder. 



