88 Memoirs of the Indian Museum. [Vor. VI, 
account with previous descriptions. Like M. varians var. simplex, the present form 
has only one pair of spermathecae. 
I may add here that I am now of opinion that my M. annandalei (20) is to be 
identified with the var. simplex of the present species ; in view of the range of varia- 
tion in this species the differences I formerly described are not suflicient to entitle the 
single specimen I had at my command to separate recognition. 
Megascolex sextus, Stephenson. 
(Plate VIII, fig. 24.) 
Pattipola, 6200 ft., Ceylon; under rotten wood, etc. Nov.-Dec., 1913 (S. W. Kemp). A single 
specimen. 
The species was recently described by me (20) from a single specimen, also ob- 
tained at Pattipola. I was at first inclined to separate the present specimen as a 
distinct variety, on the ground of differences in the genital markings, penial setae, 
and certain minor points. But since this is only the second specimen of the species 
that has come to hand, we have as yet no knowledge of the amount of variation that 
occurs; the present collections have shown ine, however, that the limits of variation 
in the Ceylon and S. Indian species of Megascolex are wide, and it is at least probable 
that the comparatively slight differences between the present and the former speci- 
men will be bridged in the future. 
The following notes of the present specimen are given for comparison with the 
previous description. 
Number of setae 50/v, 50/ix, 52/xii, 46/xix, and in the middle of the body 46. 
A pair of genital papillae are present in groove 18/19; these are small, almost 
circular, eye-like, and in line with but smaller than the papillae of the male pores. 
The first distinguishable septum is 6/7; none are noticeably thickened. The giz- 
zard, barrel-shaped and comparatively soft, is as previously found, in vii. The in- 
testine begins in xv. 
The micronephridia are in two rows per segment, one in front of and the other 
behind the line of the setae. 
A dorsal connection of the testis-sacs of the two sides was not made out; but 
they approach each other over the gut near the middle line. 
The spermathecae, in vii and viii, open (as in the original) in 6/7 and 7/8; the 
diverticulum here arises from the middle of the length of the duct. 
The penial setae (fig. 24) are 1 mm. long, and 15; broad at the middle of their 
length. The shaft is straight in its proximal two-thirds; in its distal third it has a 
wavy outline, of two successive gentle curves. The tip is curved through a quadrant, 
and sharply pointed. About ‘08 mm. from the point a slight swelling marks the 
situation of a ring of tooth-like sculpturings, which however do not stand off as 
spines from the surface; a little proximal to this is a second swelling or irregularity 
on the shaft, with more rudimentary sculpturings; and there may, further along, be 
a sign of a third. 
Remarks.—The species belongs to the small group in which the gizzard is undoubt- 
