236 Freda Bage : 



There is no trace at all of any network of nephridial ducts in 

 this species, each nephridium being absolutely distinct from all 

 others, with its own openings, interior and exterior. 



In several specimens examined for the nephridia, only those 

 of the anterior half of the body were in good preservation, the 

 rest of the body being infested with some sporozoan form, 

 which was present in such numbers as to disguise completely 

 the histology of the nephridia Avhen sections were cut. 



10. — Notoscolex queenslandica,^ Spencer; 



syn. Cryptodriius queenslandica, Spencer (5). 



No nephridiopores visible. 



Nephridial system micronephric. 



Macroscopic Structure. — The micronephridia are present in 

 every segment of the body with the exception of the first. 

 Towards the anterior end, in segments four to five, they are 

 extremely minute and numerous, and are arranged quite irregu- 

 larly, lining the whole of the inner wall of the segment. Be- 

 hind the first few segments, however, though still very minute, 

 they are no longer indefinitely arranged, but form a single row 

 in each segment attached to the wall, about the centre of the 

 segment, between the two branches of the nerve cord. 



11. — FletchePOdrilus unicus, Fleteliei-, vai-. major, Spencer 



(17). 



The nephridioi)ores are well marked and are situated opposite 

 and anterior to the fourth seta from the midventral line on 

 either side of the body, except those on segments 2, 3 and -i, 

 which are slightly dorsal to the setae. [Fig. 22.] Fletcher 

 (15), p. 1540. 



Nephridial system meganephric. 



M arrosropir Stnirture. — On dissection one pair of mega- 

 nephridia is seen to be present in each segment after the first. 

 There are no micronephridia or peptonephridia present. The 

 nephridia of the anterior segments of the body are very much 



I Michaelseii ibid 



