340 Records of the Indian Museum. EVOL, SCE 
together behind it are those corresponding to vii and viii, and the 
one at its anterior end belongs to segment vi. Its walls show a 
curious condition; the whole of its anterior end is thick and very 
firm, and so is its ventral wall, but the rest of its dorsal and lateral 
walls and its posterior end are thin, soft and slightly baggy; the 
same condition was found to be present in a second specimen also. 
The spermathecae (fig. 31) are mushroom-like, or somewhat 
pyramidal with much rounded angles. The duct is very broad at 
its origin ,—about one-third as broad as the ampulla,—but becomes 
much narrower at its ectal opening; it is rather shorter than the 
ampulla. The diverticulum arises from the uppermost portion of 
the duct by a short and narrow stalk, which bears a rounded cauli- 
flower-like mass, composed of a large number of indistinct cham- 
bers; the breadth of the mass is about equal to that of the upper 
end of the duct. 
Testis-sacs are present, as Michaelsen (14) suspected, but they 
are of peculiar form; they are constituted by an extremely delicate 
membrane, which covers in the whole of the contents of the respec- 
tive segments,—stretching from one septum to the next and inclu- 
ding dorsal vessel and alimentary canal as well as sperm masses 
and the male organs. I did not see the testes in segment xi, and 
the funnels of xi appeared to be distinctly smaller than those of x. 
Octochaetus barkudensis, sp. nov. 
(Plate xxxai | figs. 32, 33). 
Barkuda Island, Chilka Lake, Ganjam District, Madras Pres., 17-vii- 
1914. (Chilka Survey). Two specimens, one not fully mature. 
External Characters.—Length 43 mm., diameter I°5 mm. 
Colour brown. Segments 140, the last few very short. 
In one specimen the prostomium was tanylobous; in the other 
epilobous 4, pointed behind, the angle being continued as a median 
groove back to the first furrow (1/2). 
I could not see any dorsal pores in front of the clitellum. 
The setae are paired; their relations may be expressed as 
follows :—hbehind the clitellum ab =1aa, = }bc, =4cd or nearly; 
near the posterior end ab—=1aa, =—}bc, and is somewhat less 
than cd. In front of the clitellum the setae are difficult to see, 
but the relations appear to be much as they are near the posterior 
end. ‘The seta d is a little below the lateral line of the body. 
The clitellum includes two-thirds of xiii and two-thirds of 
xvii, = 44; it is smoother than the neighbouring segments, but 
there is little difference of tint. 
On segment xviii are two approximately rectangular cushions 
which take up the whole length of the segment, and meet in the 
middle line where they are separated by a slight groove. The 
seminal grooves cross the somewhat indefinitely limited outer ends 
of the cushions, passing between the prostatic apertures on xvii 
and xix, in line with setae b. 
