28 



E. NOMURA : 



side (fig. 23) and gives rise to a number of capillaries either in 

 front or behind. 



The prostomial and anal integumentary networks are formed 

 by the capillaries arising directly from the terminal ends of the 

 dorsal and ventral vessels. 



The presence of blood -capillaries in the clitellar hypodermis 

 has already been mentioned ; they take rise from the integumentary 

 networks. The extra -clitellar hypodermis is entirely destitute of 

 them. 



7. Genital system. 



1). Testes. There are only one pair which are attached to the 

 posterior face of septum 1X/X, with their anterior ends close to the 



P h -^, 





Fig 24. 



Semi-diagrammatic side view of sperm-duct, x 150. f — funnel, v.d— vas deferens, a — 

 atrium, dp— atrial duct portion, dh — dorsal portion of the lateral horn, ph — posterior 

 portion of the lateral horn, tb — transversal bridge, co — opening into the median chamber 

 of the lumen of the transversal bridge in the left side of the body, mp — male pore, 

 S.X/XI— septum X/XI. 



ventral nerve cord, and are provided with a very thin membrane 

 (fig. 25, te). 



2). Sperm-sacs. Two sperm-sacs are found : an anterior and 

 a posterior. Both are the outgrowths of the septa of segment X 



