250 Transactions. 



The tubercula pubertatis are paired, in line with a, and, as 

 in some other species, are in considerable numbers, namely, 

 10/11, 13/14, 14/15, 15/16, 18/19, 19/20, 20/21, 21/22. Each 

 of these appears as a smooth rounded swelling, joined across 

 the middle line by a slight ridge. 



A single pair of spermathecal pores lies in line b, at 8/9. 



Nephridiopores are also in line b. 



Internal Anatomy. — There is nothing characteristic in re- 

 gard to the alimentary system. 



The testes and funnels and sperm-sacs are in the usual 

 segments, but the anterior pair of each is smaller than the 

 posterior pair. 



The prostates extend to segment 23, and the penial sac 

 into the 24th. 



The penial chaetse are thus of considerable length, as in 

 R. besti, but in form recall those of 7?. leptomerus. The chaeta 

 is delicate, curved, and terminates in a simple point, which 

 appears to be flexible ; at any rate it is sharply recurved in the 

 specimens mounted. 



The single pair of spermathecse lies in the 9th segment ; the 

 main sac is ovoid ; the diverticulum cylindrical, not quite so 

 long as the sac, and opens into the upper part of the short duct. 



Log. — In banks of streams in dense bush. 



2. Dinodriloides annectens, n. sp. 



I was very interested to meet with this genus again, as the 

 type was the solitary individual obtained. 



This second species is rather larger than the first, measur- 

 ing 90 mm. by 3 mm. for 102 segments. 



Colour. — When alive the worm is dark sienna-brown, so 

 dark anteriorly to the clitellum as to appear nearly black. The 

 Avhole dorsal surface of the body is pigmented down as far as 

 chseta d — i.e., the whole upper half of the body. The ventral 

 surface is, of course, paler than the dorsal. The clitellum is 

 much lighter brown, and the areas round the genital pores and 

 the tubercula pubertatis are yellow ; the chsetse arise from pale 

 spots. After being in alcohol for longer than a year the colour 

 has changed to bluish-grey, as described in the case of the 

 previous species, D. beddardi,* which probably when alive is 

 coloured dark-brown. 



There is so close a resemblance between the two that for 

 some time I supposed this new species to be merely a second 

 specimen of the previous one. But there are one or two points 

 of external anatomy in which this specimen differs from the 

 type, though I can detect no differences in internal structure, 



* Proc. Zool. Soc, 1904, vol. ii., p. 226. 



