1914-] J- Stephenson : Oligochaeta . 379 



in shape, the flat face looking forwards ; they h*e, and strongly 

 bulge backwards, against septum B; internally their structure is 

 lamellar. The glands of segments x and xi contained large 

 calcareous masses. 



The intestine begins in xiv. 



The last heart is in xii. 



In addition to numerous micronephridia on the inner surface 

 of the body-wall, there is also in each segment in the posterior 

 part of the body a pair of large meganephridia. A large mass of 

 micronephridia is attached on the anterior face of septum I ; 

 owing to the obliquity of the septum, the mass is narrowly 

 included between the septum on its outer and the oeso- 

 phagus on its inner side; there are also a number of micronephri- 

 dia on the posterior face of the same septum. A fluffy tuft of 

 micronephridia is situated on and posterior to a softish white pad 

 just internal to the prostatic aperture; the pad is ovoid, not 

 much raised, and extends transversely from the prostatic duct to 

 the ventral nerve cord. 



A pair of male funnels were seen lying free in segment x ; 

 testes were not distinguished. Neither were found in xi. 



The vesiculae seminales are two pairs; one in x, of moderate 

 size, flattened, their edges cut up into lobes, and attached to the 

 posterior face of t't ; and one in xi, attached to the posterior face 

 of TT. On the left side the posterior of the two seminal vesicles 

 appeared to perforate septum W and enter the anterior part of xii. 



The male ducts were not distinctly seen. The prostates are 

 lobular ; that on the right extends through segments xiv-xvii, that 

 on the left through xv-xvii. The prostatic duct is bent once or 

 twice in its course, and narrows towards its end. 



The ovary is large, in segment xii; also in this segment is a 

 moderate-sized funnel. A minute folded structure in xiii was 

 examined microscopically, but was found not to be ovarian in 

 nature. 



The spermathecae are two pairs, situated near the middle line 

 in segments vi and vii. Owing to the obliquity of the septa, the 

 anterior spermatheca is at the level of the middle of the micro- 

 nephridial mass in v, and the posterior is at the level of the anterior 

 part of the gizzard. Each spermatheca is directed backwards, is 

 tubular in form, bent on itself several times, its inner end rather 

 dilated ; ampulla and duct are not distinguishable. A small sub- 

 globular diverticulum is attached close to its external termination 

 (fig- 2). 



No penial setae were seen. 



Though the segments were difiicult to count with certainty, 

 on account of the secondary annulations being in places of equal 

 distinctness with the primary, and the setae small or absent, I 

 convinced myself that, for the present specimen, the above num- 

 bering of the segments is correct. The specimen is therefore 

 evidently abnormal, and to obtain a correct idea of the species 

 to which it belongs it is necessary to suppose the organs shifted 



