442 WILHELM MICHAELSEN. 



fibrous internal structure, which is extremely conspicuous in 

 this part of the seta, follows in its course this oblique bending 

 of the tip, and then converges towards the acute tip. There 

 is a faint annulation on the internal structure of the part of 

 the seta just beneath the modified distal end, and to this 

 annulation is added a more or less distinct external ornamenta- 

 tion consisting of irregular, scale-like projections. These often 

 join to form irregular and bluntly-toothed transverse or oblique 

 lines. 



Setal glands : the internal glands surrounding the sexual 

 seta3 and corresponding to the external copulatory papillae 

 are circular in outline, and project more or less into the 

 body-cavity. At most they are hemispherical, and are only 

 indistinctly divided by some nai-row farrows. 



Microchgetus colletti Be.dd. 



Microclisetus colletti Bedd., "On Two New Species of the African 

 Genus Microclisetus belonging to the collection of Oligochaeta in 

 the Museum of Christiania." Proc. Zool. Soc. Lond., 1907, i, p. 277, 

 text-fig. 85. 



Hab. — Zululand (teste Beddard). 



Dr. R. Collett, of the Christiania Museum, has kindly 

 entrusted to me the type-specimen of this species for a re- 

 examination. I am able thereby to complete Beddard's 

 description. 



External Characters. — The number of segments is about 

 312. The six seo-ments from the fourth to the ninth are all 

 divided into two ringlets. Generally the hind ringlet is 

 scarcely shorter than the front one, but in the ninth the 

 difference in the length of the two ringlets is more obvious. 

 Beddard notes the biannulation of " some" segments, but does 

 not state exactly which segments are biannulated, and in the 

 text-figure there is nothing to be seen of this biannulation, 

 and there is no difference in the length of the first seg- 

 ments. 



Seta3 : the median ventral distance is somewhat longer 

 than the middle lateral distances {aa^hc). The median 



