132 P roceedliuis of the R'>yal Society oj Victoria. 



(a) Oryptodrilus (Fletcher). 



(1) G. gippdandicus, sp. n. (Figs. 1, 2, 3, G3). Spirit speci- 

 mens o inches long, one-third inch broad. 



Prostomium completely dovetailed into the peristomium. 



Peristominm, with grooves, giving it a ribbed appearance. 



Clitellani fairly well developed ; red-brown colour dorsall_y 

 and laterally (in spirit), extending over segments 14-16, 

 together with the posterior p.irt of 13, and tlie anterior of 17. 



Seta3, regularly arranged in couples along the anterior 

 half of the body. Then the two outer rows become irregu- 

 lar, and along the posterior third of the body all the rows 

 are very irregular, giving to this part of the body, at first 

 glance, much the appearance of a perichcete. 



Male pores on papilliB on segment 18, at the level of the 

 interval of the two inner set?e of each side. 



Oviduct pores on segment 14 ventral of, and slightly 

 interior to, the innermost setse on each side. 



Spermathecal pores five in number ; intersegmental ; at 

 the level of the first seta. The first between segments 4 and 5. 



Dorsal pores present. The first between segments 3 and 4. 



Nephridiopores difficult to distinguish ; at the level of 

 and in front of the third seta of each side, commencing on 

 the third segment. 



Alimentary canal. Gizzard in segment 5. Vascular 

 swellings on the oesophagus in segments (S-i3. 



Calciferous glands in segments 14 and 15. Large intestine 

 <;ommencing in segment 17. 



Blood vascular .system. Dorsal blood-vessel double from 

 the sixth segment to within about twenty of the posterior 

 end. That is, there is a very distinct double loop in each 

 segment, the two halves uniting where they pass through the 

 septa. Hearts in .segments (i-12, the two first small. A 

 supra-intestinal vessel in the segments containing the hearts. 



Excretory .system. Meganephric, with a coiled portion 

 ventrally on each side, from which a duct luiis upwards 

 to the third seta. 



Reproductive system. Testes, two pairs attached to the 

 interior walls of segments 10 and 11. Ciliated I'osettes in 

 the same segments. 



Prostates, coiled, tubular, and in segments 18 and 19. 



Sperm sacs finger-shaped, attached to the posterior walls 

 of segments 9 and 10. 



