BY J. J. FLETCHER. 611 



From the posterior one of v to the posterior one of xil the 

 mesenteries are very thick ; they are braced together and to the 

 body wall by very thick cords, very noticeable in the case of the 

 first complete one — the anterior one of v. 



The segmental organs comprise a pair of coiled tubules in each 

 segment after the second, each tubule consisting of a proximal 

 fairly straight thick- walled portion longer (sometimes twice 

 as long or even more) in some segments than in others accord- 

 ing to the position of the pore, a shoi-t vesicular middle portion 

 whose distal end lies close to the nerve cord, and a long ciliated 

 glandular distal portion folded on itself and convoluted so that 

 the loop reaches outwards a little beyond the commencement of 

 the middle portion, while its ciliated anterior extremity, which is 

 without any conspicuous "funnel," lies somewhere near the 

 junction of the middle and distal portions. 



Hah. — Thomas's Plains, N. E. Tasmania. 



For all my examples of this fine species I am indebted to Mr. 

 Alex. Morton, Curator of the Tasmanian Museum, who very- 

 kindly sent me both living and spirit specimens, discovered by M r, 

 Bernard Shaw, Inspector of Police. The worms of this species 

 are readily distinguishable by the five pairs of spermathecse, and 

 the numerous clitellar ridges ; they are remarkable for their thick- 

 ness, for while they are much shorter than, and comprise less than 

 half the nuuiber of somites met with in, the big Notoscolex from 

 Gippsland, they fairly rival it in thickness ; and are much more 

 robust and massive than the worms of the smaller Notoscolex, than 

 which they have fewer somites. 



ISlOTOSCOLEX TUBERCULATUS, n. Sp. 



A dozen (spirit) specimens vary from 9 cm. (a young individual) 

 to 25 cm. in length, .5-7 mm. in breadth ; the number of segments- 

 from about 250-280. 



Colour (in spirit) uniformly pale flesh-coloured ; body cylindrical.. 



