

12 



21 



-28 



Fig. 43. Helix pomatia, opened and the viscera exposed. 



From Hatschek and Cori. 



Pharynx. 2. (Esophagus. 3. Salivary glands, with duct. 



4. Stomach. 5. Liver. 6. Eectum. 7. Anus. 8. Kidney. 

 9. Inflated commencement of ureter. 10. Opening of ureter to 

 exterior. 11. Ventricle. 12. Auricle. 13. Pulmonary vein. 

 14. Opening of nephridium into pericardium. 15. Ovo-testis. 



16. Common duct of ovo-testis. 17. Albumen gland. 18. Female 

 duct. 19. Male duct. 20. Spermatheca. 21. Flagellum. 

 22. Accessory glands. 23. Penis. 24. Dart-sac. 25. Vagina. 

 26. Eye tentacle, retracted. 27. Anterior tentacle, retracted. 



28. Muscles which retract the head, pharynx, tentacle, etc. 



152 



