52 Memoirs of the Indian Museum. [Vor. VI, 
examination of the base of the female funnel in the dissection, the female aperture 
would appear to be between b and c, probably near b. 
Internal anatomy.—Septa 5/6—8/9 are somewhat thickened. 
There are three gizzards in segments xiii—xv; the anterior one is, however, less 
firm than the other two. 
The last heart is in ix. 
The testis-sacs are large, massive, projecting on both sides of septum 9/10, not 
constricted by the septum; the part in x is larger than that in ix. On opening the 
sac the testis is seen, after clearing out the contents, as a small bushy structure. The 
vas deferens is a fine tube which leaves the posterior side of the sac and presents 
numerous closely packed coils. The prostate is an opaque-white ovoid body in x; it 
has a short moderately thick stalk, a smooth surface but without muscular shimmer, 
and is joined by the vas deferens on its inner side. | 
The ovarian chamber is formed by the fusion of septa 10/11 and 11/12. It was 
opened into while opening the specimen, which seems to show that the roof of the 
chamber is at the dorsal parietes. The chamber encircles the gut dorsally and lateral- 
ly, and in the present case was full of ova. 
The ovary is a considerable fringe-like band on the anterior wall of the ovarian 
chamber. The funnel is on the posterior wall, in the lateral region ; it extends upwards, 
however, lateral to the gut by a greatly drawn-out dorsal lip which reaches to not 
very far from the mid-dorsal line; the base of the funnel is ventro-lateral, on the body- 
wall. 
The ovisac, originating dorsally from the posterior wall of the ovarian chamber, 
is tubular, elongated, and contained within segment xii. It passes laterally round the 
alimentary tube, and tapers towards its lower end. 
The ampulla of the spermatheca is situated dorsally in viii, on the posterior face 
of septum 7/8; it is ovoid in shape, and the duct leads off from its lower and outer 
end. The duct coils considerably, some coils lying on the septum while others are free 
in segment viii; it then pierces the septum ventrally and immediately joins the 
atrium, which is wholly in vii. The atrium is a mammillary projection, sessile on the 
parietes in the line of the lateral setae (or rather in the longitudinally running inter- 
ruption of the muscular layer of the body-wall which marks this line) ; it is joined by 
the duct at its base. 
Remarks.—The species which, perhaps, the present form most resembles is 
D. travancorensis, Mich. (12). It is indeed just possible that the two are identical, since 
Michaelsen’s specimens were in a bad condition of preservation, and the present 
account is based on a single specimen; and future opportunities may bring to light 
specimens which bridge over the differences. The size, proportions, and shape of the 
present specimen seem however to distinguish it; I should be inclined to put the 
colour as characteristic,—unfortunately the condition of Michaelsen’s specimens did 
not allow him to state the colour. The shape of the egg-sacs, of the spermathecal 
atria, perhaps also of the prostates and of the male apertures, may be valid distin- 
guishing marks between the two. 
