PLATE V. 



Dina parva. x 22.5. 



Fig. 33. Dorsal view of the first nine somites, showing the annulation. 

 Fig. 34. Dorsal view of several posterior somites, showing the annula- 

 tion. 



Nephelopsis obscura. x 5. 



Fig. 35. Dorsal view of the first nine somites, showing the annulation. 

 Fig. 36. Ventral view of the first nine somites. 



Haemopis grandis. x 3. 



Fig. 37. Dorsal view of the characteristic portions of the reproductive 

 organs dissected out. The right sperm sac and the epi- 

 didymis have been somewhat displaced to better expose the 

 vagina &c. 



at Atrium 



de Ejaculatory canal of the spermduct 



ga Albumen gland 



gp Prostate gland 



ode Common oviduct 



ov Ovary 



ss Sperm sac 



tl,t2 Testes 



va Vagina 



vd Vas deferns 



Macrobdella decora, x 4. 



Fig. 38. Dorsal view of the reproductive organs somewhat dissected 

 out. 



egl Copulatory glands 



od Oviduct 



os Egg sac 



Other letters as for figure 37. 



