I] 



STRUCTURAL AND SYSTEMATIC 



9 



i>plfv 



D.V. 



Tr.c 



Fig. 5. A longitudinal section 

 through the middle of the first 

 nineteen segments of the body 

 of Notiodrilus vasliti (a species 

 very closely allied to that 

 described in the text), the seg- 

 ments are numbered i, ii, &c. 

 D.v. dorsal blood vessel, G 

 gizzard, H hearts, ce oeso- 

 phagus lying in front of 

 gizzard behind which another 

 tract of still narrow oeso- 

 phagus is seen opening into 

 Int. intestine. The whole 

 alimentary canal is supported 

 by the intersegmental septa 

 {Pr.c.) between which is the 

 system of spaces forming the 

 coelom, ov.d. pore of oviduct, 

 Splh. orifices of spermathecae, 

 <? orifice of sperm duct, o 

 ovary, t spermaries. (After 

 Eisen.) 



