62 REFERENCES TO THE PLATES. 



Tig. II. Genitalia. Same references as Fig. VI. PI. IX. 

 Fig. Ill, Portion of the oviduct laid open. 1. Transverse folds of 

 the sides ; 2. spermatic groove. 

 Fig. IV. Dental plate, largely magnified. 



Figs. V. — VI. H. hirsuta. 



Fig. V. Viscera dissected apart. 1. Buccal body ; 2. oesophagus ; 

 3. stomach; 4. intestine; 5. rectum; 6. anus; 7. salivary gland; 8. 

 liver; 9. testicle; 10. epididymis ; 11. accessory gland of do. ; 10.* vas 

 deferens; 12, prostate; 13. penis; 14. retractor of do. ; 15. ovary; 16. 

 oviduct; 17. genital bladder ; 18. j^ulmonary chamber; 19. heart; 20 

 renal organ. 



Fig. VI. Accessory gland of the epididymis, highly magnified. 



Figs. VII. — IX. H. thyroidus. 



Fig. VII. Digestive apparatus. Same references as Fig. I. 

 Fig. Vin. Genitalia. Same references as Fig. VI. PI. IX. 

 Fig. IX. Penis laid open. 1 . Longitudinal folds ; 2. valvular fold; 

 3, vas deferens; 4. retractor of penis ; 5. orifice of vagina. 



PLATE XII. 



Figs. I. — III. H. intertexta. 



Fig. I. Genitalia. 1. Testicle; 2, epididymis; 3, accessory gland 

 of do.; 2.* vas deferens; 4. prostate; 5. penis; 6. retractor of do,; 



7. sac of the dart ; 8. glandular pouches; 9. ovary; 10. oviduct; 11. 

 genital bladder ; 12. duct of do, to the vagina ; 13. division of the duct, 

 enclosing the lower part of the genitalia; 14. retractor of the dart sac; 

 15. portion of the duct of the genital bladder, enclosing the cloaca; 16. 

 cloaca. 



Fig. II. Lower part of the genitalia laid open. 1. Penis; 2. por- 

 tion of the duct of the genital bladder, which encloses the lower part of 

 the genitalia, laid open ; 3. vas deferens; 4. neck of the oviduct; 5. 

 duct of the bladder; 6. the portion of do. to the vagina ; 7. dart sac ; 



8. glandular pouches ; 9, dart; 10. orifice of the vagina. 



Fig. III. a. the dart, the size of nature; b. do. much magnified. 



Figs. IV. — VII. H. ligera. 



Fig. IV. Digestive apparatus. 1. Buccal body; 2. retractor of 

 do.; 3. oesophagus; 4. stomach; 5. intestine; 6. salivary gland; 7. 

 hepatic duct. 



