t.J: 



sc 



Fig. 6. Genital region of Maoridrilus dissimilis (in whicli species the different 

 organs are essentially as in Notiodrilus tamajusi). Tlie oesophagus is cut 

 away between the xth and xviiith segments to display the various organs, n 

 external orifices of nephridia which alternate in different segments ; the one 

 lettered opens in front of dorsalmost pair of setae, that of segment xvi opens in 

 front of ventralrao.st pair, p coiled glands opening on to xvith and xixth 

 segments, .. sacs containing long seta, associated with these glands, t spermary 

 of segment ; another pair in an exactly similar position in segment xi. Behind 

 spermaries are funnel-shaped openings of sperm ducts which are seen running 

 along the body to their external orifice on xviiith segment. r..f. sperm sacs 

 behind the posterior of these and in segment xiii is seen tlie large ovary 

 corresponding in position to the spermary and opposite to each ovary tlie 

 oviduct, (x 3.) 



