1914.] J.Stephenson: Oligochaeta. . yj'j 



which the organs appear in the dissection), nearer its anterior than 

 its posterior border. 



The prostate is a large cuboid milky white mass of soft con- 

 sistency, with a granular surface, with a narrow attachment to 

 the body- wall. 



Segment xi constitutes a large egg-chamber, with a mass of 

 eggs lying dorsal to the alimentary canal. The funnels appear to 

 be of unusual size, with fringed margins prolonged upwards on 

 the anterior face of septum ii. 



The egg-sacs have a relatively narrow neck which passes 

 through segments xii and xiii ; the sacs swell out to a large size in 

 xiv ; in the present specimen that of the right side does not extend 

 beyond xiv, while that on the left side reaches back into xv. The 

 sacs touch each other in the mid-dorsal line, completely overlap- 

 ping the intestine. Numerous brown granules, the size of a pin's 

 head, were present in the egg-sacs and egg-chamber (cf. Perionyx 

 depresstis). 



The spermathecae are in segment viii. Each has a consider- 

 able ovoid ampulla, which overlies the nephridium on the posterior 

 face of septum s, the nephridium being between ampulla and 

 septum, and thus not arching over the ampulla as in the previously 

 described species. The duct is much coiled as it passes down 

 the septum; on arriving at the ventral body- wall it runs outwards, 

 still slightly coiling. It terminates on the left side, in the present 

 specimen, in a small slightly dilated portion, which however is by 

 no means marked, being only about twice the ordinary diameter 

 of the duct ; on the right side even this slight dilatation was not 

 discoverable. 



Megascolides oneilli, sp. nov. 

 (PI. xxvi, figs. I, 2.) 



A single specimen, in a poor state of preservation. Janakmukli, Abor 

 country; i3-xii-i9ii (7- ^'- O'Neil). 



Length y^ inches; greatest diameter 6 mm.; colour light 

 olive green, darker on and in front of clitellum. Segments, ca 

 244. 



Prostomium proepilobous. 



Dorsal pores very obvious (due to state of preservation), first 

 in groove It, present on clitellum. 



Segments i-iii consist of a single annulus, iv is biannulate, 

 v-xi more or less obviously quadriannulate; xii is triannulate. 

 Behind the clitellum the intersegmental grooves themselves are 

 not distinguishable (in the present specimen). 



The setae are very small, difficult to see, and almost indistin- 

 guishable over the greater part of the body. They are rather 

 widely paired ; aa= 2ab anteriorly, = 2lab behind clitellum and 

 = ^ab further back ; ab = f 6c ; be slightly or obviously >cd; dd = 

 approx. f circumference. Setae are present on the clitellum ; but 

 the ventral setae of segments xvii and xviii are absent. 



