I917-] J- Stephenson : Indian Oligochaeta. 397 



Testes and much folded iridescent masses representing the fun- 

 nels covered with ripe spermatozoa are free in segments x and xi. 

 The anterior seminal vesicles, in segment ix, are large, yellowish 

 and very conspicuous masses, ver}^ slightly lobed ; the posterior 

 pair in segment xii are not so large and are more cut up into lobes, 

 though still not deeply. 



The anterior prostate on each side extends back to segment 

 xxiii ; the glandular part becomes in segment xx a thin coiled duct 

 which passes forwards through xix, swells gradually in xviii, 

 becoming broad, firm and muscular, and curving inwards towards 

 the middle line ends in segment xvii. The posterior gland, begin- 

 ning behind in segment xxviii, passes forwards to xxiv, where 

 similarly it becomes a thin coiled duct ; this becomes gradually 

 thicker in xxi and xx, and ends in xix, the final portion of its 

 course being almost straight. 



The two vasa deferentia of the right side were identified in 

 their course backwards underneath the peritoneum ; they pass the 

 duct of the anterior prostate on its outer side, and end curving 

 rather inwards behind it. 



Ovaries and funnels are present in segment xiii, A minute 

 lobulated appendage of septum 13/14 on its posterior face is pro- 

 bably a small ovisac. 



The spermathecal ampulla (fig. 17) is an irregular sac, 

 narrower below, and continued into the duct without any sharp 

 demarcation. At about the place where the one passes into the 

 other is a ring of small white shining sessile diverticula, about a 

 score in all ; but these do not form a single circle all round, — they 

 are arranged two deep on each side of the duct, where they are 

 more closely set than in front or behind. Beyond the diverticula 

 the duct is stout, shining, and narrows slightly towards its ectal 

 end ; in length the portion below the diverticula is about half that 

 of the ampulla. 



Between the openings of the spermathecae of the same side, 

 and so about the middle of segment viii, is a group of five rather 

 twisted accessory glands, implanted quite near each other ; they 

 are similar to those previously described, each with a narrow 

 cylindrical duct which is much shorter than the elongated glandu- 

 lar portion. 



A character of this specimen which was not noted in the pre- 

 vious species is the presence of accessory glands in the region of the 

 prostatic apertures also. There are three pairs, in segments xvii, 

 xviii and xix respectively. Those in xviii are the largest ; they are 

 massive and solid-looking, rather rectangular in shape, take up the 

 whole length of the segment, and nearly touch each other in the 

 middle line. Those in xvii and xix are only about half the size of 

 those in xviii ; they are on the inner side of, and rather conceal the 

 end of, the prostatic ducts. All have short stout stalks ; the stalks 

 of the glands in xvii and xix appear to become continuous with 

 that of the gland in xviii by passing through the septa where these 

 are attached to the parietes. 



