Further Descrqjtions of Australian Earthworms. 49 



Peristomium with a median ventral groove. 



Clitellum extending over segments 14-16, and the posterior 

 part of 13, white and glandular in appearance. Accessory copu- 

 latory structures well developed. Median oval patches on the 

 mid ventral surfaces of segments 7, 8 and 9, a pair at the level of 

 the interval between the two ventral setae of each side in seg- 

 ments 10 ; a pair at the level of the ventralmost setae in segment 

 17 ; a mid ventral one in segment 19, and larger mid ventral 

 ones in segments 20, 21 and 22. 



Setae, 8-11 on each side in the segments in front of the 

 clitellum, 12 on each side in the middle and posterior part of the 

 body. 



Male pores on papillae in segment 18 at the level of the 

 ventralmost setae. 



Oviduct pores on segment 14. 



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

 and 6, 6 and 7, 7 and 8, 8 and 9, at the level of the interval 

 between the ventral pair of setae on each side. 



Dorsal pores, the first between segments 4 and 5. 



Alimentary canal. Gizzard in segment 5 ; calciferous glands 

 in segments 10, 11, and 12; large intestine, commencing in 

 segment 16. 



Circulatory system. Dorsal vessel single ; a lateral longitudinal 

 vessel on each side in the region of the oesophagus as far back as 

 the calciferous glands ; hearts in segments 7-12. 



Excretory system. Plectonephric. 



Reproductive system. Testes, two pairs in segments 10 and 

 11, into which, also, the ciliated rosettes open. 



Spermiducal glands. Flattened, bilobed, in segment 18. 



Sperm sacs. Racemose, attached to the posterior wall of 

 segment 9, and the anterior of segment 12. 



Ovaries in segment 13, into which the oviducts open. 



Spermathecae. Five pairs, in segments 5-9, each consisting 

 of a sac with a tubular diverticulum nearly as long as the sac. 



Habitat. Nar Nar Goon, Victoria. 



(7). Megascolex minor, sp. n. (Figs. 55, 56, 57). Spirit 

 specimens 1|^ to 3 inches long, ^ inch broad. 



Prostomium about one-half dovetailed into the peristomium. 



4 



