GLANDS OF AUSTRALIAN EARTHWORMS. 113 
8. M. tupErcuLatus* (Fletcher). 
Two pairs of testes and rosettes in segments 10 and 11. 
Sperm-sacs on posterior wall of segment 9 and on the anterior 
wall of segment 12. 
Spermiducal glands tubular and very much coiled, lying trans- 
versely in segment 18. The gland-duct is long, and curved 
proximally into an S-shape ; it is embedded chiefly in the body- 
wall. 
The two vasa deferentia enter each gland-duct at the same 
point at about half the length of the latter. 
On each side, lying between the spermiducal duct and the 
mid-ventral line, are a pair of small, slightly muscular saes, each 
enclosing a long, somewhat robust penial seta, which pierces the 
body-wall close to and on the inner side of the male opening. 
IL. CryYpropRILts. 
9. C. ILLAWARRE ft (Fletcher). 
One pair of testes and of rosettes are seen in segment 11: 
one pair of sperm-sacs also on the anterior wall of segment 12. 
The spermiducal glands are apparently somewhat long and 
straight flattened structures, lying transversely in segment 18. 
The gland-duct is short and straight, almost completely enclosed 
in the ventral body-wall, through which it runs vertically down- 
ward to open on the surface. The vasa deferentia are two in 
number on each side; not one, as might be inferred from the 
presence of only one pair of testes and rosettes. These run at 
varying levels, the anterior one in the muscle of the body-wall, 
the posterior one at its edge, until they reach the level of the 
posterior half of segment 13, when the upper one descends and 
runs alongside the lower one in the muscle-layer back to 
segment 18. They then join just outside the wall of the spermi- 
ducal duct, and the single one thus formed runs down in the 
substance of the wall to open into the duct close to its external 
opening. At the inner end of each gland-duct is a pair of short 
nurrow sacs, nacreous in appearance, from the muscle-fibres in 
their walls, and each containing a long curved penial seta 
(s., fig. 24). These sete are curiously hooked near their tips, and 
each opens independently of the others, through the body-wall, 
* Proc. Linn. Soc. N.S. W. 1887, p. 611: Notoscolex tuberculatus (Fletcher). 
Beddard, loc. ct. p. 494. 
+ Ibid, vol. iii. 1888, p. 1528. Beddard, doe. cit. p. 503. 
