Prelinimary Notes on Tasuianian Earthworms. 41 



Spermathecfe, two pairs, one each in segments 8 and 9. The 

 divei'ticulum is simple and less than one-half the length of the 

 sac. 



Habitat. Mount Olympus, Lake St. Clair, Tasmania, in damp 

 soil under logs, and amongst decaying leaves in Beech Forest 

 (Fagus cunninghami). 



(7). C. insularls (Figs. 19, 20, 21). Length in spirit 1-2 

 inches, about |- inch broad. In spirit is dull purple 

 colour dorsally, pinkish-purple laterally, and flesh colour 

 ventral ly. 



Prostomium dovetailed about one half into the peristomium. 



Clitellum distinct, including segments 14-16 and the anterior 

 portion of segment 17, and the posterior of segment 13. Lighter 

 in colour than surrounding segments. 



Setas regularly arranged save an odd one or two at the 

 posterior end. The two innermost setiB of each side are drawn 

 in towards the middle line in segments 17, 18 and 19, so that the 

 inner couple lie close together on each side. 



Male pores on white elliptical patches on segment 18 at the 

 level of the interval between the inner couple of setfe on each 

 side. 



Oviduct pores on segment 14. 



Spermathecal pores, five in number, placed at the level of the 

 innermost setse between segments 4 and 5, 5 and 6, 6 and 7, 

 7 and 8, 8 and 9. 



Accessory copulatory structures. A pair of small elliptical 

 patches at the level of the interval, between the two inner setae 

 of each side, between segments 16 and 17. 



Dorsal pores present, the first between segments 5 and 6. 



Nephridiopores at the level of the third set*, the openings 

 indicated by a small white patch on the anterior margin of the 

 segment. 



Alimentary canal. (Jrizzard in segment 5. No true calciferous 

 glands present. Large intestine commencing in segment 16. 



Circulatory system. Single dorsal vessel. Hearts in segments 

 10, 11 and 12, larger than those in front and arising from the 

 supra-intestinal vessel. 



Excretory system. Meganephric. 



