102 M emoirs of the Indian Museum. (VO 
suggest that it probably curves round behind the latter to end on its posterior or per- 
haps its inner side. 
Ovaries and funnels were identified in xiii. 
The chief peculiarity of these specimens is the condition of the spermathecae 
(fig. 8). There is on each side a cluster of spermathecae, of two sizes, larger and 
smaller, which open either in common or near each other on the eighth segment. 
To take first the larger spermathecae. These are four in number, two on each 
side, and appear to represent the original two pairs. They are large, and either 
regularly or irregularly pear-shaped; in the latter case the irregularity is due to inden- 
tations and the consequent production of a lobed outline. The narrow end, narrow- 
ing still further, becomes the duct, which is thus not demarcated from the ampulla. 
The diverticula form two considerable clusters at the base of the ampulla; these 
clusters leave one face of the ampulla (or duct) largely free, but cover the other 
face. 
As to their external openings:—the anterior spermatheca of each side becomes 
attached to the body-wall between segments vii and viii, and the posterior at or in 
front of the posterior boundary of viii; but by gently scraping the body-wall the 
duct of the anterior can be traced backwards, and that of the posterior forwards, so 
that the two approach and almost meet at the level of the setae of viii, and not far 
from the middle line. Moreover the condition of the worm is such that the external 
ends of the ducts can be seen from the ventral surface through the softened walls, 
and though {in the dissected specimen) the actual opening cannot be distinguished 
with certainty, from the situation of the converging ducts as seen from the outside it 
must be about in a position corresponding to seta d. 
The smaller associated sacs are either two (left) or three (right side) in number 
They are narrow, apparently tubular, finger-like structures, of varying length, the 
longest about half as long as one of the larger spermathecae. The surface is slightly 
mammillated; they converge to their attachment on the body-wall between the ends 
of the larger spermathecae. 
It has already been said that no definite external aperture could be seen in the 
dissected specimen. In another example however a roundish marking, with a whitish 
circumference and darker interior, was visible on both sides in the line of the setal 
ring of segment viii, slightly external in position to the genital marking previously 
described as situated posteriorly in vii; on the left side a small similar marking 
could be made out internal to the first. These marks perhaps represent the posi- 
tion of the spermathecal aperture or apertures, though the latter are themselves not 
visible. 
No penial setae were discovered. 
Remarks.—The position of the genus is not determinable without some little diffi- 
culty. Since it has obvious relations to the Octochaetinae, it will be helpful to note 
in the following form the chief distinguishing characters of the genera of the sub- 
family and their relations to the ancestral Acanthodrilinae. 
