BY J. J. FLETCHER. GOQ' 



rows, sometimes alternating irregularly, sometimes a few nearly- 

 straight, at other times forming an ascending series of five or six 

 the amount of the sinuosity varying within considerable limits in 

 the different individuals ; in one specimen these rows are, however, 

 nearly straight. 



Clitellum absent in some specimens, partially developed in 

 others, and enormously thick in a few, including segments 

 xiv-xxir, and in addition part of xiii, usually its middle and 

 posterior annuli ; when only partially developed, the glandular 

 development is wanting in the median ventral line for a space 

 extending outwards on either side a little beyond the second row 

 of setse, but in other cases the ventral surface not occupied by the 

 ridges is modified so as more or less completely to surround 

 these, but for which the clitellum would be complete all 

 round. Between xiv and xv, and between each pair of suc^ 

 ceeding segments as far back as xxi-xxii is a lighter-coloured 

 ridge taking in the last annulus of the anterior and the first annulus 

 of the posterior of tlie two segments between which it occurs, 

 and extending outwards on each side a little beyond the second 

 row of setse and to the ventral margins of the girdle, except in 

 the case of the fourth and fifth which do not extend outwards 

 so far and between which is a slight ridge on which are situated 

 the two small papillae carrying the male pores, which correspond 

 in position with the intervals between the first and second setae 

 on each side, or are slightly ventrad of the latter. 



The two oviduct pores on xiv, in front and a little ventrad of 

 the first seta on each side, and about 3 mm. apart. 



Spermathecal pores five pairs, a pair between each two segments 

 from IV to IX, venti'al in position and in line with the first seta on 

 each side. 



Dorsal pores commence between xii and xiir. 



Nephridiopores form a sinuous series of pores situated close to 

 the anterior margins of the segments commencing with segment 

 II ; on the whole they may be said to be dorsad of the fourth row 

 of setse, but as both the setse of this row and the nephridiijpores. 



