1915.] J. STEPHENSON : Indian Oligochaeta. | 63 
ments) is the result of the examination of the Horton Plains specimens The specimen 
from Elk Plains, examined later, showed a few differences. The prostomium was 
small; its character was difficult to ascertain,—I thought at first it was zygolobous 
but afterwards concluded that it was + epilobous. The clitellum extended only 
slightly into xvii, 2.e.—rather over 34. The setal relations seemed to vary, perhaps 
in consequence of the uneven contraction of the surfaces in different parts of the 
worm; aa—1}-24b—bc—cd approximately. The nephridia began in xii on one side, 
xiii on the other. The duct of the spermathecal apparatus was relatively longer and 
thinner, the diverticulum smaller and attached nearer the ectal end of the duct. The 
prostates were destroyed by the injury to the specimen. 
Genus MEGASCOLIDES. 
Megascolides hastatus, sp. nov. 
(Plate VII, fig. 9.) 
Parambikulam, 1700-3200 ft., Cochin State; 16—24-xi-t915 (F. H. Gravely). Seven specimens. 
External characters.—The specimens are of various sizes; some of the smaller 
ones show the porophores as well as the larger,—e.g. they are present in a specimen 
55 mm. long and 17 mm. in maximum diameter. 
The largest specimen measures 175 mm. in length, and has a maximum diameter 
of 2h mm. Colour grey, with a slaty tinge in places. The body is rather flattened 
in the anterior portion behind the genital region, and posteriorly is cylindrical. Seg- 
ments 216. 
The prostomium is small or invisible; where it was best seen it was epilobous à, 
and bent downwards into the buccal cavity. 
The dorsal pores begin from furrow Io/I1. 
The clitellum extends apparently over 4 xiv—xvii=3}, but is not well marked ; 
in one specimen it was only distinguished by being of a browner colour. 
The setae are paired. In front of the clitellum aa—=24—3ab, bc=14—2ab, cd= 
14—14ab; behind the clitellum aa=3ab, bc—2ab, cd—=1hab; near the posterior end 
aa—2ab, bc=cd—14ab; the pairing of the lateral setae is thus not very close, the 
interlateral setal distance being about half as much again as the ventro-lateral. The 
mid-dorsal interval (dd) is equal to half the circumference. The setae of the first 
twenty segments are smaller than those behind. 
The male apertures are on small circular papillae on segment xviii, between the 
lines of setae a and b. 
The female apertures are probably represented by minute white spots on xiv 
near the middle line, between and just in front of the level of setae a. 
The spermathecal apertures are small, in furrows 7/8 and 8/0, in line with setae a. 
There are no other genital marks. 
Internal anatomy—Septum 4/5 is apparently present, thin and delicate, as is 5/6; 
6/7 is slightly, 7/8—11/12 are moderately thickened, and 12/13 again is slightly thick- 
ened. 
