326 Records of the Indian Museum. EVOL. erie 
inwards to a, but not outwards to a corresponding distance out- 
side b. 
The female apertures are apparently paired, in a minute 
whitish groove equal in length to the interval aa and situated just 
in front of the level of the setae. 
The spermathecal apertures were not seen externally. From 
the dissection they were found to lie in furrows 7/8 and 8/9, a lit- 
tle ventral to the line of setae c. 
A pair of small papillae on segment xvii in front of the male 
pores may quite possibly be artefacts. 
Internal Anatomy.—Septum 5/6 is apparently present, but very 
thin; 6/7 is very thin; 7/8 is still thin, though thicker; 8/9 is 
slightly strengthened, 9/10 moderately so; a number of succeeding 
segments are moderately or slightly strengthened, as far as 13/14, 
but it is difficult te be precise as regards these degrees in so small 
a worm. 
The gizzard, in segment vi, is large, barrel-shaped, and firm. 
The oesophagus is much bulged laterally in xv and xvi, but there 
are no separate calcareous glands. The intestine begins in xix. 
The last hearts are in xiii. 
The excretory system shows a mixed condition. In and in 
front of the prostatic segment, as far as segment x, bushy tufts of 
micronephridia, of relatively considerable length, are implanted 
ventrally in each segment, one on each side by the side of the ali- 
mentary canal; in ix the tuft is implanted on the anterior face of 
g/To or at least is adherent to it; in viii none were seen; but there 
are very large tufts on each side behind the pharynx, on a level 
with the anterior end of the gizzard. 
Behind the prostate mega- and micronephridia coexist. The 
first meganephridium is in xx; thence backwards the megane- 
phridia are prominent structures, appearing as elongated loops in 
each segment, and so continue through and behind the middle of 
the body. ‘Towards the posterior end they become less con- 
spicuous, and the micronephridia, which have accompanied them 
throughout, become more numerous and relatively more prom- 
inent. About twenty segments from the end the meganephri- 
dium becomes indistinguishabie, or only doubttfully distinguishable, 
from the micronephridia. The nephridia cover the bodywall on 
each side from the level of b to above d, or rather more than one- 
third of the half-circumference. 
The small testes and moderate-sized funnels are free in seg- 
ments x and xi. 
The vesiculae seminales are small, racemose in form, and 
situated on the anterior septa of segments xi and xii. 
The prostate is small and confined to segment xviii; it is com- 
pact in form and only slightly lobed on the surface; possibly, in 
the single specimen available, it is not fully developed. The duct 
begins in the middle of the gland as from a hilus; it is compara- 
tively long, shining, with a rather bent or wavy course, and passes 
transversely inwards. 
