252 INTRODUCTION. 



side; 8. heart; 9. renal organ; 10. renal duct; 11. penis, seen within 

 its receptacle ; 12. base of the multifid vesicle; 13. parenchymatous sac 

 of the vagina; 14. vagina; 15. sub-oesophageal, and 16. supra-ciesopha- 

 geal ganglia; 17. olfactory sinus. 



Fig. VI. Dental plate : a. size of nature ; b. magnified, with the 

 retractor muscle attached. 



PLATE V. 



BULIMUS FASCIATUS. 



Fig. I. The viscera dissected apart. 1. Buccal body; 2. lingual 

 pouch; 3. retractor of buccal body ; 4 stomach; 5. intestine; G. rec- 

 tum; 7. anus ; 8. salivary glands ; 9. ducts of do. ; 10. liver; 11. posi- 

 tion of the testicle commingled with the posterior lobe of the liver ; 12. 

 epididymis ; 12.* vas deferens ; 13. accessory gland of the epididymis ; 

 14 prostate; 15. penis; 16. retractor of do. ; 17. multifid vesicle; 18. 

 ovary; 19. oviduct; 19.* glandular portion of do. ; 20. genital blad- 

 der; 21. pulmonary chamber ; 22. pulmonary aperture ; 23. puhnonary 

 artery; 24. pulmonary vein; 25. pericardium; 26. auricle; 27. ventri- 

 cle; 28. aorta; 29 . renal organ ; 30 renal duct; 31. orifice of do. ; 32. 

 supra-oesophageal ganglia; 33. stomatO-gastric ganglia; 34. suli- 

 oesophageal ganglia. 



Fig. II. Buccal body laid open, enlarged. 1. Upper lip; 2. lower 

 lip; 3. dental plate ; 4. sides of buccal cavity; 5. tongue; 6. entrance 

 of oesophagus ; 7. oesophagus; 8. salivary ducts; 9. lower part of 

 buccal body: 10. retractor muscle. 



Fig. III. The muscular tongue, with the tubular prolongation of 

 the lingual lamina into the lingual pouch. 



Fig. IV. Dental plate: a. magnified; b. size of nature. 



Fig. V. Excavation of the foot 1. Buccal body turned forward; 

 2. retractor muscle; 3. attrahent fasciculi; 4. lingual pouch; 5. re- 

 tractors of the foot ; 6. olfactory sinus. 



PLATE VI. 

 Helix albolaeeis. 



Fig. I. The animal, with the pulmonary chamber (1) laid open 

 and turned back from the visceral mass (2); 3. the mouth; 4. the 

 cloaca, voluntarily protruded. 



Fig. II. The viscera, all dissected apart. 1. Buccal body; 2. 



