I] 



STRUCTURAL AND SYSTEMATIC 



, 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, n, &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.) 



