Preliminary Notes on Tasvianian EartJnvorms. 51 



quite regular, behind this a few more become intercalated but the 

 number on each side never exceed 13. 



Male pores on papillte at the level of the interval between the 

 two innermost setse. 



Oviduct pores on segment 14, very close to, and just ventral of 

 and anterior to, the innermost sette. 



Spermathecal pores, five pairs, at the level of the interval 

 between the first and second seta^, between segments 4 and 5, 5 

 and 6, 6 and 7, 7 and 8, 8 and 9. 



Accessory copulatory structures. A mid-ventral tumid patch 

 on the anterior margin of segment 18, two pairs of patches at the 

 level of the innermost setse between segments 18 and 19, 19 

 and 20. 



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



Alimentary canal. Gizzard in segment 5. In segments 6 and 



7 the oesophagus is swollen, white, but not vascular, in segments 



8 to 12 it is white, swollen and very vascular, in segments 13-15 

 it is again white and swollen but not vascular. There are no 

 true calciferous glands. The large intestine commences in 

 segment 17. 



Circulatory system. Dorsal vessel single. Supra-intestinal 

 vessel in segments 11 and 12. Last heart is in segment 12. 



Excreti)ry system. Meganephric. 



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

 11. Rosettes in the same segments. 



Prostates wide, tubular with racemose surfaces extending 

 through segments 17-20. 



Sperm sacs in segment 12, saccular in form. 



Ovaries in segment 13 into which open the oviducts. 



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

 diverticulum is simple and very small. 



Habitat. Dee Bridge, Tasmania. 



(5). P. scolecoidea (Figs. 49, 50, 51). Length in spirits \\ inch, 

 slightly moi'e than one quarter inch broad. The body 

 consists of some 77 segments, the first 12 of which are a 

 fair width, the rest very narrow indeed. The body has 

 the general appearance of a minute annulated sausage. 



Prostomium less than one half dovetailed into the peristomium. 



e2 



