MISS G. SWEET ON THE SPERMIDUCAL 
Puate 14. 
Fig. 1. Spermiducal gland on left side of Diporocheta Bakert, showing spermi- 
Or 
14. 
15. 
16. 
Fig. 17 
ducal duct and two setal sacs. 6. 
. Fletcherodrilus wnicus. Spermiducal gland of right side. The muscular 
bulbus (7.6.) is seen on each side to run under the ventral longitudinal 
muscle-band (¢.'7.') which supports the nerve-cord (7.¢.). X 6. 
. Megascolides intermedius. 'The spermiducal glands lie in segment 
18, transversely to the body. On the ventral surface is seen the mass 
of unicellular glands, the surface being mottled with patches of 
pigment. The nerve-cord runs above this. xX 6. 
. Megascolides victorie. Spermiducal gland of right side lying in 
segments 18 to 29. The duct is much coiled. X 6. 
. Megascolides roseus. Spermiducal gland of left side. Gland very much 
coiled. xX 6. 
. Diplotrema fragilis. Spermiducal glands and ventral accessory 
glands. x 18. 
. Acanthodrilus sydneyensis. Two pairs of spermiducal glands. The 
position and opening of the vas deferens on segment 18 is shown 
by a dotted line. 
. Megascolex Frenchi. Lobate spermiducal gland of right side, in 
segments 18 and 19. The markings on the surface of the gland may 
be clearly seen. xX 6. 
. Megascolex Dendyi. Spermiducal gland of right side. Lobate in 
segments 18 and 19, with a curved duct in segment 18. x 6. 
. Megascolex dorsalis. Spermiducal gland of left side. Surface showing 
irregular markings. Duct very short. xX 6. 
. Digaster queenslandica, Gland of right side. Surface-markings slightly 
visible. No duct to be seen from above. x 6. 
. Digaster queenslandica. Spermiducal gland of another individual. 
Tubular in appearance. No duct visible. X 12. 
. Digaster armifera. 'Trilobed gland of right side with setal sacs and 
muscles belonging to them, attached to the terminal part of the gland- 
duct. x 6. 
Megascolex Fielderi. Bilobed gland of left side with lobular surface- 
markings. Duct curved and entering muscular bulbus. x 6. 
Megascolex intermedius. Portion of section showing sperm-reservoir 
of right side with its division into two parts, the lower containing 
the sperm-rosettes, and developing sperm in both. The vas deferens 
from the previous segment may also be seen, and the nerve-cord in 
position. Zeiss A.A. oc. (2). 
Megascolides insularis. Transverse section of spermiducal gland 
showing ordinary gland-cells, special club-shaped cells, and columnar 
lining. The whole enclosed in peritoneum. Zeiss D. oc. (2). 
PuatE 15. 
. Megascolides intermedius. ‘Transverse section through gland-wall, 
showing groups of gland-cells. The outlines of the columnar cells 
lining the duct are not visible. The nuclei are clearly seen, as also 
