1914.] J. vStephenson : Oligochaeta jrom Northern India. 351 



First dorsal pore in furrow Vi. 



The setae are paired ; in front of the clitellum ah == \-\aa 

 =rz\hc = \cd, while behind the clitellum ah= \aa = \-\'bc =^cd \ 

 di is rather less than f circumference. 



The chtellum was invisible in most specimens, though the 

 male pores and spermathecal apertures were present. Where 

 present it is indicated onl}^ b^' a slightl}' darker colour and by 

 the absence of secondary annulation on the affected segments ; its 

 extent is |^xiii-xvii = 4^ or thereabouts. 



The male apertures are in segment xvii, in the line of setae 

 b ; they are small, with whitish lips, and surrounded outside the 

 lips by a rather darker area. 



The female apertures were not seen. 



The spermathecal apertures are small, in furrow |-, external 

 to the line b. 



There are no other genital markings. 



The first septum is J , which is very slightly thickened, and is 

 connected with the posterior surface of the pharynx by many 

 strands and adhesions. Septum f is moderately thickened ; in the 

 specimen dissected it was not markedly convex backwards, but 

 was folded on itself, and its attachment to the alimentary canal 

 was almost on a level with its attachment to the parietes. Septa 

 T and I are absent; f, xo and h' are moderately thickened and 

 close together; ii is present and slightly thickened, and the rest 

 are thin. 



The gizzard is of moderate size, marked off from the succeed- 

 ing part of the alimentary canal by a distinct constriction ; the 

 portion of the tube between this constriction and the following 

 septum (J;) is dilated, and has soft walls of a yellow colour. 



The oesophagus is swollen in segments xi, xii and anterior 

 part of xiii, forming a pair of calcareous glands. The intestine 

 begins in xv. 



The dorsal vessel is continued forwards as far as the pharynx ; 

 a transverse vessel is seen in front of septum *, another in front 

 of f . There are three lateral commissures between t and I, one 

 crossing the anterior part of the gizzard and two behind it. The 

 heart of segment xi has the usual relations to a normally developed 

 septum T2. The last heart is in xiii. 



The micronephridia are few and of moderate size in each of 

 the post-genital segments ; they are arranged in a transverse row 

 in each segment. They are numerous round the base of each 

 spermatheca, and there is a tuft on each side anteriorly, by the 

 side of the pharynx. 



There are two pairs of testes, in segments x and xi, of equal 

 size. Funnels are present in the same segments ; they are free, 

 and folded but not iridescent. The vasa deferentia of the two 

 funnels of the same side are separate as far as the level of the 

 prostatic duct; they unite as they pass underneath the transversely 

 placed prostatic duct, and form a tube about as thick as this 



