38 Proceedings of the Royal Society of Victoria. 



Clitellum distinct, tumid, complete occupying segments 14-16 

 together with the posterior part of 13, and the anterior part 

 of 17. 



Setfe in four couples, the two of the ventral couple being 

 nearer to each other than the two of the outer. The fourth seta 

 on each side is near to the dorsal surface. 



Males pores on papillse at the level of the interval between the 

 two inner set?e on segment 18. 



Oviduct pores on segment 14. 



Spermathecal pores, five pairs at the level of the first setse 

 between segments 4 and 5, 5 and 6, 6 and 7, 7 and 8, 8 and 9. 



Dorsal pores, present, the first between segments 4 and 5. 



Accessory copulatory structures. Four pairs of elliptical 

 patches at the level of the interval between the first and second 

 setse between segments 16 and 17, 17 and 18, 18 and 19, 19 and 

 20. 



Alimentary canal. Gizzard in segment 5. The calciferous 

 glands in segments 12, 13, 14 and 15. Large intestine com- 

 mencing in segment 17. 



Circulatory system. Single dorsal vessel. The last pair of 

 hearts in segment 12. 



Excretory system. Meganephric. 



Reproductive system. Testes, two pairs, in segments 10 pan 

 11 into which also open the I'osettes. 



Prostates. Long, widely tubular and coiled, extending 

 through segments 18-24. 



Ovaries in segment 13, into which the oviducts also open. 



Spermatheca3, five pairs, in segments 5, 6, 7, 8 and 9. The 

 diverticulum simple and not more than half the length of the 

 sac. 



Sperm sacs, i-acemose in segments 9 and 12. 



Habitat. Parattah and Mount Wellington. 



In internal anatomy this worm is almost identical with 

 C. viortoni, but the two are perfectly distinct in external appear- 

 ance. The worm in question is a whitish stout form, whilst 

 C. inortoni is darkly coloured with conspicuous seta3, and is long 

 and narrow. 



