1915.] J. STEPHENSON : Indian Oligochaeta. gI 
The clitellum extends from xiv tonearly the hinder end of xvii, and thus includes 
nearly 4 segments ; it is well delimited in front and behind, rather narrower than the 
neighbouring segments, smooth, and shows setae and dorsal pores. 
The male pores are on small whitish papillae on xviii in line with setae 5b; the 
surface between the apertures is depressed. 
The female pore is single, mid-ventral in xiv, just in front of the line of the setae. 
The spermathecal apertures are similar in appearance to those of the type form; 
in number they are 4 or 5 on each side of each groove (7/8 and 8/9); they begin in ab 
or b, and are continued outwards at intervals corresponding about to the intersetal’ 
distances. 
Internal anatomy.—This agrees closely, on the whole, with that of the type form. 
The prostatic duct has a somewhat wavy course; its terminal portion is notably 
broader. . 
The spermathecae (fig. 26) are 4, 5, or 6 on each side in each of the two segments. 
Here an ampulla can be distinguished from a duct in each; the ampulla is ovoid, the 
duct is cylindrical, rather longer than and about half as wide as the ampulla. In 
most cases there is also a diverticulum, from the terminal portion of the duct, in 
form slightly club-shaped, glistening, and in length from half as long to nearly as 
long as the duct; the cavity of the diverticulum is simple. The diverticulum may 
be wanting; this happens in the outermost spermathecae of three of the four rows (in 
the row of six the outer two spermathecae lack a diverticulum). 
There are no penial setae. 
Remarks.—Though not uncommon in the Glossoscolecidae, the possession of 
numerous spermathecae in a single segment is rare in the Megascolecidae,—indeed 
is apparently found only in a few species of Pheretima. 
The more important differences between the type form and the variety are the 
tollowing :—in the former, setae a and 0 are larger than the rest, and the setal interval 
ab is greater,—characters which are not found in the variety ; the number of setae is 
greater in the type form; the variety has a clitellum, the type form not; the number 
of spermathecae is smaller in the variety, an ampulla and duct are differentiated, and 
a diverticulum is usually present. 
Megascolex kavalaianus, sp. nov. 
(Plate IX, fig. 27.) 
Kavalai, 1300 — 3000 ft., Cochin State; 24 —27-ix-1914 (F. H. Gravely). A single mature specimen. 
External characters.— Length 57 mm., maximum diameter I’5 mm. ; colour pinkish 
grey, the anterior end purplish, clitellum grey without the pink tinge. Segments 94. 
Prostomium epilobous +, small, folded downwards into the mouth aperture. 
First dorsal pore in groove 5/6. 
The dorsal break in the setal ring is small, —zz=2 yz; ventrally aa= gab in front 
of the clitel.um, — 3ab behind, and further back 34ab. ‘The setae are often small 
and difficult to see. The numbers counted were 40/ix, 38/xii, ca. 32/xix, and in the 
middle of the body approximately 28, but the number is not constant. 
