1920.] J. Stephenson: Oligochaeta from India and E.Persia. 229 



Prostomium apparently proepilobous (buccal cavity everted). 



Dorsal pores from furrow 12/13. 



Setae paired ; in front of the clitellum ab = \aa = less than half (say f ) be = fcrf ; 

 behind the clitellum ab = \aa = half be = led ; in the middle of the body ab = \aa = 

 f be and is slightly less than cd. 



The clitellum extends over segments xiii-xvii ( = 5). Furrows are visible ventral- 

 ly, but not dorsally ; dorsal pores are absent. 



The male field shows two elongated trench-like depressions, on segments xvii and 

 xix respectively ; these take up the whole length of the segments, and are thus sepa- 

 rated by a transverse ridge which represents the ventral surface of xviii ; the tren- 

 ches extend from a little outside the line of setae b to a corresponding point on the 

 other side, and their lateral portions are rather deeper than the middle. 



The prostatic pores are in these lateral portions, in line with setae b, on small 

 white papillae. The seminal grooves pass longitudinally and straight between the 

 pores of the same side. 



The female pores could not be distinguished. 



The whole of the ventral surfaces of segments viii and ix are thickened and some- 

 what flattened, forming a couple of low papillae, transversely much elongated, and 

 with their lateral ends rounded ; these extend on each side to some distance outside 

 the line of setae b. The spermathecal apertures appear to be just in front of the site 

 of setae a of these segments, though setae a and b are not visible. 



Internal Anatomy : — The first septum is probably 4/5 ; this is moderately 

 thickened. Behind this is a space in which lies the gizzard ; the next septum is 7/8 ; 

 this, and all the succeeding ones to 11/12 are somewhat thickened; thereafter the 

 thickening decreases as far as 14/15, after which all are thin. 



The gizzard, in front of septum //§, is spherical, and not very hard. There is a 

 pair of large calciferous glands in segment xv, on the right side getting also into xiv ; 

 each is kidney-shaped, with its convex margin indented. The intestine begins in xvii. 



The last heart is in segment xii. 



The excretory system is micronephridial. 



Male funnels are free in segments x and xi ; testes were only doubtfully identi- 

 fied. 



The seminal vesicles are in segments ix and xii. In the latter segment they are 

 small, somewhat flattened, and lie within the curve of the hearts on each side. In 

 segment ix I found none on the right side ; but on the left there was a fairly large, very 

 deeply indented and lobed vesicle. 



The prostates are two pairs of opaque, moderately thick, convoluted tubes, in 

 segments xvii and xix, which bulge apart the septa. The duct is thinner, shining, 

 wavy in its course, transverse in direction, and thinner in its first part than after- 

 wards. 



The ovaries are in the usual situation. 



The spermathecae are two pairs. The ampulla is elongated, somewhat conical, 

 of moderate size ; the duct is half as wide and one-third as long as the ampulla, not 



