BY J. J. FLETCHER, M.A., B.SC. 379 



Body cylindrical, and of nearly uniform girth, but tapering 

 slightly just near the extremities. 



Prostomium pear-shaped, dividing the buccal ring for a little 

 more than half its width ; the buccal I'ing as wide as the following 

 segments, which are more or less conspicuously tri-annulate, 



Clitellum comprising three complete segments, xiv-xvi, and 

 including more or less of xiii and xvii : of xiii sometimes almost 

 the whole of it ; of xvii only just the anterior margin, or enough 

 to include the male pores, but in no specimen was the whole of it 

 included ; thick and complete all round, usually hiding both the 

 setae and the boundaries of the segments. 



Setse of the ordinary character, about -39 mm. long, with a slight 

 enlargement at about J from the free tip, in eight longitudinal 

 rows, of which on each side two are ventral, one lateral, and one is 

 dorsal ; the first row on each side about as far from the median 

 ventral line as the second row is from the first ; the interval 

 between the second and third rows somewhat less than twice that 

 between the first and second ; the fourth row about midway 

 between the median dorsal line and the third row, the interval 

 between the third and fourth wider than that between the first 

 and second, but not so wide as that between the second and third. 

 From about segment xxi or xxii forwards the setse of the second 

 row on each side stand gradually successively closer to the corres- 

 ponding setse of the first row until on segment xviii the interval 

 between the two rows has diminished to about half ; on xvii the 

 first and second setae on each side not visible ; from xvi the second 

 rows diverge again until at about segment xii the setse stand 

 at the ordinary distance apart. 



The two male pores are on two slight elevations on segment xvii, 

 not conspicuous, hardly noticeable without a lens, just dorsad of the 

 first row of setae. The two oviducal pores are on xiv, in front of and 

 in line with the first seta on each side. Spermathecal apertures 

 and dorsal pores not visible. Nephridiopores very distinct, a row 

 on each side commencing after segment iv, close to the anterior 

 margins of the segments, and a little ventrad of the third row of 

 setee. 



