52 Proceedings of the Royal Society of Victoria. 



Clitellum, not visible. 



Setee very numerous ; there are at least 40 on each side, 

 but they are very minute, and difficult to count. There is no 

 continuous or any distinct dorsal break except at the very 

 posterior end ; the ventral break is slightly better marked, but 

 is very small. 



Male pores on minute papillae at the level of the fourth set8e in 

 segment 18. 



Oviduct poi'es on segment 14 just in front of the second seta;. 



Spermathecal pores, two pairs, at the level of the fourth seta 

 between segments 7 and 8, 8 and 9. 



Accessory copulatory structures, none developed. 



Dorsal pores present, the first between segments 3 and 4. 



Alimentary canal. The whole canal is thrown into coils. 

 Gizzard in segment 5 and very large in comparision to the length 

 of the body. No true calciferous glands. Large intestine 

 commencing in segment 18. 



Circulatory system. Single dorsal vessel. Supra-intestinal in 

 segments 8-12. Lateral vessel on either side in segments 10 and 

 11. The last heart is in segment 12, the first round the gizzard 

 in segment 5. 



Excretory system. Megan ephric. Li segments 2-5 the neph- 

 ridia appear to consist of a large number of coiled tubules than 

 elsewhere. Peptonephric salivary glands present (?). 



Reproductive organs. Testes, two pairs, in segments 10 and 

 11, rosettes in the same segments 



Prostates, small, flattened, racemose in segment 18. 



Sperm sacs, racemose in segment 12. 



Ovaries in segment 13, into which the oviducts open. 



Spermathecfe, two pairs, in segments 8 and 9. Two very 

 small diverticula at the base of a fair sized sac. 



Habitat. Under logs in the King Kiver Valley, Tasmania. 



This worm is remarkable for its short stumpy nature. It is 

 evidently mature, though in extei-nal appearance it does not look 

 so. Mr. Officer who found it tells me that it is very abundant, 

 and never seems to attain to a larger size. It has not the 

 slightest resemblance externally to a perichiete worm, and in 

 spirit at all events the minute setie project only a very short way 

 fro)n the surface. 



