BY E. J. GODDAKD. 771 



examination of an entire specimen, whereas the ventral seta? 

 were easily and readily made out. They measure (H3mm. in 

 length, but vary much in shape in different segments, some being 

 in the form of a much elongated S, or rather resembling the 

 curved capilliform seta? of Phreodrilus subterraneus; others being 

 straight, but all gradually becoming strongly attenuated from 

 the base towards the very fine free extremity. The portion of 

 each seta hidden in the body is straight and of uniform thickness. 

 The region of the body in which dorsal seta? are seen in entire 

 specimens does not actually mark out the limit of the area of 

 occurrence of such, inasmuch as I have found dorsally situated 

 setee completely enclosed in setigerous sacs, even in the anterior 

 region of the body, but they do not project beyond the surface, 

 and, judging from their strength of development, are possibly 

 disappearing. 



The male pores are situated in the anterior region of segment 

 xii., immediately behind the septum forming the anterior 

 boundary of that segment. The cells in the neighbourhood of 

 the pores are of a glandular nature, certain of them being pyri- 

 form and taking a deeper stain than contiguous cells. The pores 

 cannot be made out in the entire specimen, but by means of 

 longitudinal sections they are made readily visible. 



•The female pores are situated at the anterior extremity of 

 segment xiii., immediately behind the septum separating segments 

 xii.-xiii. 



The spermathecal pores have disappeared, but in the position 

 in which one would expect to find them, viz., on the ventral 

 surface of segment xiii., there is present, on the right side of the 

 body, a solid strand of glandular cells with deeply stained nuclei, 

 connecting the lower spermathecal sac with the vential body-wall 

 in the posterior region of that segment. In the immediate 

 vicinity of this structure there is present a pair of setae which 

 differ in nowise from the other latero-ventral setae. 



The clitellum is in the form of a cingulum round segments xii. 

 and xiii., as mentioned previously, the ventral region being much 

 thicker than the dorsal. 



