1915.] J. STEPHENSON : Indian Oligochaeta 87 
The gizzard is large, stoutly barrel-shaped ; septum 5/6 appears to be inserted 
on to it, so that it would be partly in v and partly in vi; but the extreme tenuity of 
the anterior septa renders an exact determination difficult. 
There are no definite calcareous glands; but paired ovoid swellings of the oeso- 
phagus, not marked off from the main tube, are present in segments xiv—xvi and, less 
marked, in xvii; these show transverse vascular striations on their surface. The 
intestine begins in xviii. 
The last heart is in xiii. 
The excretory system is micronephridial. There is a large tuft on each side of 
the posterior part of the pharyngeal mass, but none on the body-wall in the region of 
the gizzard or in front; from this point they are few till the clitellum is reached. In 
the clitellar region they are thickly set, and behind this they form a transverse line 
in each segment behind the anterior septum. 
The testes and iridescent funnels are free in x and xi. The vesiculae seminales, 
in xi and xii; are attached to septa 10/11 and 11/12, and are racemose in form, con- 
sisting of a number of small globular or ovoid lobules. 
The prostates are lobulated, rather small, confined to xviii or extending into xix ; 
the duct is narrow, almost straight, and transverse in direction. — 
The ovaries are large, flattened and plate-like, in xiii; the funnels are in the same 
segment. The oviducts pierce septum 13/14, converge underneath the nerve cord, 
and, meeting, enter the body-wall just in front of the line of attachment 14/15 ,— 
practically in that line. | 
The spermathecal apparatus (fig. 22) varies, even on the two sides of the same 
specimen. The ampulla is large, somewhat ovoid, and delimited from the duct by a 
slight constriction ; the duct, which may either be fully as long as, or considerably 
shorter than the ampulla, is stout, and narrowest at its outer (ectal) end. The diver- 
ticulum, arising from the duct near its junction with the body-wall, is long, —longer 
than ampulla and duct together, cylindrical and bent on itself; in width it is about 
equal to the duct. | 
The penial setal sacs are remarkable for their enormous length; they stretch 
back to be attached in segment xxvi. The setae themselves (fig. 23) are 5 mm. long, 
and 27, in thickness near the tip. They are nearly straight, the free end slightly 
expanded, transversely cut across, and thinned in the middle, so that the condition 
is that of a web stretching between the two limbs of a fork. A number of spines, of 
fair size, project somewhat from the distalmost portion of the shaft; the spines have 
no regular arrangement. 
Remarks.—The only case of the female pore or pores opening on segment xv, 
according to Beddard, is that of Libyodrilus (Geoscolecidae) (2, p. 102), where how- 
ever dissection ‘shows that the septum dividing the fourteenth and fifteenth 
segments lies behind the point of opening of the ducts,’’ and the abnormal posi- 
tion of the external opening is due to non-correspondence of septa and external 
grooves (3). 
The propriety of the specific name is illustrated by a comparison of the above 
