146 Proceedincjs of the Royal Society of Victoria. 



(2) Megascolides insign is, sp. n. (Figs. 37, 38, 39, 75). Length 

 of spirit specimen inclies, slightly more than one- 

 quarter inch broad. 



Prostomium feebly developed, and not at all dovetailed 

 into the peristomiiim. 



Clitellum distinct and light cohuii-ed in spirit specimens, 

 extending over segments 13-18. Well and sharply marked 

 dorsally ; saddle shaped with ridges on the mid-v-entral 

 surface, though it tends to extend over the ventral surface 

 and include the ridges. 



Setae in four couples, the outer couple being lateral in 

 position and having its two rows twice as far apart as those 

 of the inner couple. Posteriorly, the intervals between the 

 rows composing each couple increases considerably. 



Male pores on slight papillae, in a depression on segment 

 18, at the level of the interval between the two rows of the 

 irmer couples of setse. 



Oviduct pores on segment 14, slightly ventral of, and 

 anterior to the innermost setaj. 



Spermathecal pores intersegmental, between segments 

 7 and 8, 8 and 9 ; at the level of the interval between the 

 rows of the inner couples of setae. 



Accessory copulatory structures very strongly developed, 

 white swollen ridges ventrally on segments 15-21, the setae 

 of the inner couples being placed on the ridges. 



Dorsal pores present, the most anterior one being between 

 segments 9 and 10. 



Alimentary canal. Gizzard in segment 6. Vascular 

 swellings on the oesophagus in segments 10 and 11, small 

 white diverticula (calciferous glands ?) in segments 12, 13, 

 14, and large prominent calciferous glands in segments 15, 

 16, 17. Large intestine commences in segment 19. 



Circulatory system. Dorsal vessel single ; hearts in 

 segments 7-13, those in segments 6-9 small. 



Excretory system. Plectonephric, with larger paired 

 ncphridia at the posterioi- end of the body, with internal 

 openings. 



Reproductive system. Testes, a single pair in segment 11, 

 with rosettes opening into the same. Prostates somewhat 

 small and flattened. Sperm sacs grape-like on the anterior 

 wall of segment 12. A small pair on the anterior wall of 

 segment 14. 



