1916. |] J. STEPHENSON - Indian Oligochaeta. 309 
The duct passes downwards behind septum 7/8, and in its course 
presents a number of coils ; it then pierces the septum close to the 
bodywall, and immediately joins the posterior face of the atrium. 
The atrium here appears as a simple projection, sessile on the 
bodywall ; but from it, rather towards its inner side, there arises a 
stalked sac, in shape a much elongated ovoid, which rises vertically 
upwards. The stalk of the sac is about half as thick and half to a 
third as long as the sac proper. Both atrial swelling and stalked 
sac are completely contained within segment vii (fig. 5). 
Remarks.—In the presence of the free sac just described the 
present species resembles D. travancorensis, Mchlsn. (14); from 
which however it is distinguished by the setal relations, the charac- 
ters of the male apertures, the situation of the spermathecal aper- 
tures, and the relation of the testis-sac to the septum. 
Drawida robusta (Bourne) f. typica. 
Jungle, Coonoor 6000 ft., Nilgiris, June, 1912 (Capt. Seymour Sewell, 
7.M.S.). A single specimen. 
External Characters.—Length 136 mm.; diameter 6 mm. 
Colour a blotchy brownish grey, lighter at both ends. Body dorso- 
ventrally depressed behind the anterior region ; there are indica- 
tions of the demarcation of dorsal, ventral, and lateral areas, asin 
a number of other Moniligastrids (e.g. Drawida ghatensis, Monil- 
gaster deshayesi var. gravelyt, cf. 25). Segments 176. 
Prostomium prolobous ; segments i and ii very narrow. 
Dorsal pores absent. 
On segments ili- xviii there are a number of minute white 
papillae arranged in a ring round the segment, and looking like 
the papillae on which setae are implanted in Perichaetine forms, 
though they are not quite as regular as these. ‘They are situated 
in line with the setae in each segment; they may be met with 
also behind segment xviii. Similar papillae occur in other Moni- 
ligastrids also (cf. description of the two species just mentioned), 
and it would be worth while investigating them histologically in a 
well preserved specimen; they are not improbably sensory in 
nature. 
The setae are very minute, and very closely paired ; aa > be ; 
dd is distinctly more than half the circumference. No ventral 
setae are distinguishable in segment ii; lateral setae in this seg- 
ment could be seen only on the right side. 
Nephridiopores are in the line cd; there is no alternation in 
position. 
No clitellum was distinguishable. 
The male apertures are conspicuous slits with tumid lips in 
furrow 10/11; the middle point of each aperture is between the lines 
of the ventral and lateral setae, slightly nearer the latter. 
The female apertures were doubtfully identified as a slight 
whitening of furrow 11/12, in the lines of the ventral setae. 
