Some New or Little Known Oligocheta. 43 
nephridia is nearly as large as the post-septal, and has a 
convoluted duct. The duct leading to the exterior arises 
near to the septum. The dorsal vessel arises from the 
intestinal sinus in segment ix. 
The sperm duct funnel is about three times as long as it is 
broad. The atrium does not seem to differ from that of 
other species. It is furnished with a few retractor muscles. 
The coiled sperm duct is supported by a sheet of muscular 
and connective tissue, which runs from the septum behind 
the funnel to the atrium itself. 
69S. © Q-er g ae anal . 
p p) e - 
Sa, 
Fig. 2. 
A spermatotheca in longitudinal section. I, cesophagus, into 
which spermatotheca opens; D, diverticula; Sp, bundles 
of spermatozoa. 
The spermatothece (Fig. 2) are a single pair in segment. 
The duct is long and narrow; relatively to the minute lumen 
its walls are thick. It opens into a wide, thin pouch, with 
numerous radially disposed outgrowths. The junction of the 
