22 Proceedings of the Royal Society of Victoria. 



Cream white on the veiitiMl surface. The colour is niucii 

 the same in spirit-preserved animals, as in the fresh state. 

 This form is provisionally referred to the genus Perich^eta. 



Prostomiura veiy slio-htl y dovetailed into the peristomium. 



Clitellum well marked, complete, light giey in colour, 

 extending over segments 13-19. 



Seta3. The first setigerous segment has 4 sette on each 

 side. The second 5, then up to the clitellum there are (i. 

 The 2()th and remaining segments have 8. The setfe are 

 irregularly arranged, save the inner two of each side. 



Male pores on papilla? on segment 18, each slightly ven- 

 tral of the level of the second setse of each side. There is 

 a marked depression immediately in fi-ont of, and behind, a 

 median ventral ridge on segment 18. 



Oviduct pores on segment 14 anterior to, and very slightly 

 ventral of, the level of the iimermost setee. 



Spermathecal pores, five pairs, between segments 4 and 5, 

 5 and G, 6 and 7, 7 and 8, 8 and 9. Each slightly ventral 

 of the level of the innermost seta. 



Dorsal pores. 



Alimentary canal. Gizzard in segment 5. No true calci- 

 ferous glands, but vascular swellings in segments 8-14, those 

 in segments 13 and 14 smaller than the others. Large 

 intestine commencing in segment 16. 



Circulatory system. Dorsal vessel double as far forward 

 as the sixth segment, where the two halves do not unite 

 anteriorly, but pass forwards on to the surface of the gizzard. 

 In each segment the two halves unite where they pass 

 through the septum. In addition to the dorsal, there is a 

 double supra-intestincd. vessel in segments 9-12. Hearts 

 in segments 8-11. In segment 8, the hearts arise from the 

 dorsal vessel. In segments 9-11, they arise from the 

 supra-intestinal. 



Excretory system. Plectonephric, associated witli large 

 nephridia with internal funnels at the posterior end of the 

 body. 



Reproductive system. Two pairs of testes in segments 

 10 and 11. Rosettes doubtful. 



Prostates flattened, somewhat fan-shaped structures in 

 segment 18. 



Sperm sacs, a single small pair attached to the anterior 

 wall of seoinent 12. Sac-like in form. 



