GLANDS OF AUSTRALIAN EARTHWORMS. 115 
ducts, is a glandular mass divided off into groups transversely 
by the septa, and supporting the nerve-cord. On the inner 
side of each spermiducal duct there are also a pair of slightly 
muscular sacs, each enclosing a curved penial seta. These open 
quite independently of each other and of the gland-duct, on the 
inner or ventral side of the latter. 
LV. FLEercHERODRILUS. 
12. F. untcus* (Fletcher). 
Two pairs of testes and rosettes in segments 10 and 11. 
Sperm-sacs in segments 9 and 10 (posteriorly) and 11, 12, and 
13 (anteriorly). he gonads and rosettes appear distinct from 
the sperm-sacs in segments 10 and 11. 
The spermiducal glands (sp.q., fig.2) are long tubular structures, 
lying transversely in segment 18, with the distal end somewhat 
coiled. Towards the mid-ventral line the tube becames smaller 
and nacreous, marking the region of the duct, which then 
suddenly swells out, forming a well-marked muscular bulbus, 
straight through the centre of which runs the duct. Into this 
duct, at the level of the nerve-cord, there opens on each side 
a single vas deferens, which arises anterior by the union of 
the two ducts which leave the two rosettes. The ventral end of 
the sac passes beneath the nerve-cord and the longitudinal muscle- 
band, and meets its fellow of the opposite side in the mid-ventral 
line. Here they unite and form a strongly muscular duct, which 
runs vertically downward and slightly forward to open on a papilla 
in the mid-ventral line of segment 18. It is possible that this 
common part may be partially protrusible. 
V. DrrorocH#TA. 
13. D. Copenannt + (Spencer). 
Two pairs of testes and rosettes in segments 10 and 11. 
Sperm-sacs in segments 9 (posteriorly) and 11 and 12 (an- 
teriorly). 
Spermiducal glands are long, coiled tubular structures, and 
may extend through segments 17 to 23, though sometimes less. 
* Proc. Linn. Soc. N.S. W. iii. (2) 1889, p. 1540: Cryptodrilus unicus, 
Fletcher. bid. iv. (2) 1890, p. 990: Cryptodrilus purpureus (Fletcher). 
Beddard, Joc. cit. p. 481. 
+ Proce. Roy. Soc. Vict. 1892, p.3: Pericheta Copelandi (Spencer). Beddard, 
loc, cit. p. 442. 
