114 MISS G. SWEET ON THE SPERMIDUCAL 
on the inner side of, and sometimes slightly behind the male 
pores, and not through them as Mr. Fletcher has suggested. 
10. CRYPTODRILUS COORANIENSIS * (Spencer). 
Two pairs of testes and of rosettes in segments 10 and 11. 
Sperm-sacs in segments 7, 8,9, and 12. Those in segments 
7 and 8 appear to be sometimes absent in specimens otherwise 
similar. In segments 10 and 11 the testes are not visible as 
distinct structures from the so-called sperm-sacs, but are seen in 
section to be simply much denser parts of the ventral portion 
of these sacs, immediately in front of each of the rosettes, which 
are also enclosed within the sac, and surrounded by developing 
sperm (cf. fig. 15). These sacs in segments 10 and 11 thus 
appear to correspond to what Beddard has termed ‘“ sperm-reser- 
voirs.’ In segments 10 and 11 the sperm-reservoirs, and in 
segment 12 the sperm-sacs, form complete rings around the 
alimentary canal, those in segment 10 being much larger and 
less definite in shape than the others. 
The spermiducal glands are bilobed or flat, both varieties 
occurring in a single individual. Hach gland-duct is short and 
thick, and receives at half its length the two vasa deferentia 
which have distinct openings into it, on opposite sides of the 
duct. 
Ill. DreLotrema. 
11. D. rragruis t (Spencer). 
Two pairs of testes and rosettes in segments 10 and 11. 
One pair of sperm-sacs on the anterior wall of segment 12. 
The spermiducal glands are long, coiled tubes extending 
through segments 15 to 25, and opening as usual in segment 18 
(cf. fig.6). The posterior end of the gland is turned back through 
four or five segments. The gland-duct is somewhat less mus- 
cular than usual, and runs straight down to the surface, where 
it opens. The two vasa deferentia on each side remain distinct 
until they reach the level of segment 17, when they join and 
open to the exterior in segment 18 in front of and quite distinct 
from the spermiducal duct. On the internal surface of the 
ventral body-wall in segments 16 to 22, between the spermiducal 
* “Descriptions of Australian Harthworms,” Part 1. Proc. Roy. Soe. Vict. 
vol. xiii. pt. 1. 
t bid, vol. xiii. pt. 1. 
