70 Memoirs of the Indian Museum. [Vor. VI, 
The clitellum covers segments xiv-xvii=4 ; in sections it is seen to encroach on xiii. 
The male apertures are on small conical papillae which abut on each other in 
the mid-ventral line in segment xviii; the apertures are thus fairly close together. 
The female pore or pores were not seen. 
The spermathecal apertures appear as minute whitish rings, mid-ventrally in 
grooves 7/8 and 8/0. 
A genital area (fig. 13) is constituted on segment xviii by a couple of semicircular 
depressions, with well-defined margins, one anterior and one posterior to the male 
papillae. The bases of the semicircles are at the margins of the porophores, and 
hence face each other. The porophores take up the middle third of the length of 
xvili, and the two depressions the anterior and posterior thirds respectively, extend- 
ing, the anterior one to the border of the clitellum, and the posterior slightly 
onto xix. 
Internal anatomy.—The internal anatomy was investigated by a series of soles 
tudinal sections of the first twenty-five segments. 
Septum 4/5 is present, but very thin; 5/6 and 6/7 are somewhat thickened, 7/8- 
9/10 considerably so; 10/11 is somewhat thickened, and 11/12 slightly. 
The usual ‘ pharyngeal glands’, deeply staining, are present in segmentsiv and v, 
projecting back over the oesophagus. 
The gizzard, in v, is, at least in some degree, rudimentary; it is a very mus- 
cular portion of the oesophagus, with marked cuticular lining; this is bent on itself, 
and seems to have lost the usual form of a gizzard. 
The wall of the oesophagus is folded, and the blood sinus extends into the folds 
in segments vii and viii and all the segments x—xvi; there are no proper calcareous 
glands. 
The anterior part of the body presents the micronephridial condition ; they can 
be recognized in all segments from ii to xii, on the body-wall, on strands of connec- 
tive or muscular tissue, and on the septa by the side of the alimentary canal. But 
behind segment xii the micronephridia cease, and are replaced from xii onwards by 
meganephridia of relatively large size. The portion of the specimen which had not 
been used for sectioning was dissected to confirm the latter condition ; only mega- 
nephridia were found, of considerable size for the size of the animal; occasionally 
nephridia are absent from one or both sides of a segment. 
Testes were not identified, but funnels are seen free in segments x and xi; these 
segments also contain spermatozoa and sperm morulae. The vesiculae seminales are 
lobed, in segments xi and xii, attached to the posterior face of septa 10/11 and 11/12. 
I was unable to trace the vas deferens or to see its junction with the prostatic duct. 
The prostate is confined to segment xviii, the anterior septum of which is some- 
what bulged forwards by it; it forms a compact glandular mass (not a twisted 
cylindrical or tubular structure). The duct is strongly muscular, with a small cen- 
tral lumen ; its first portion (after emerging from the gland) is contorted, and may be 
cut four times in a single section; its terminal portion is straight, and enters the 
conical porophore to terminate on the surface near the middle line. 
