14 
Wisconsin Academy of Sciences, Arts, and Letters, 
Fig. 9. 
EXPLANATION OF PLATE II. 
. if 
Longitudinal section through wall of receptaculum seminis, 
smaller part, x 800. 
Fig. 10. 
Longitudinal section through the tip of its smaller part. The 
structure of the tubular appendix is similar to this figure, 
x 800. 
Fig. 11. 
Longitudinal section of the receptaculum seminis, larger part, 
x 800. 
Fig. 12. 
Section of wall of seminal receptacle where the two parts pass 
into each other. Epithelial cells of the smaller part are 
much longer than those of the larger part, x 250. 
Fig. 13. 
Longitudinal section of bursa copulatrix. a, inner surface, 
x 800. 
Fig. 14. 
Section of wall of cement gland near distal end. Just under 
the chitinous layer, ch., are two small nuclear-like bodies 
which, with the chitinous layer, are represented in the fol¬ 
lowing figure, x 600. 
Fig. 15. 
Surface view of chitinous layer showing markings as if of a 
division into cells. The nuclear-like bodies and markings 
may belong to some layer just under the chitin, only the 
nuclei of which are seen in the section, x 800. 
Fig. 16. 
Wall of cement gland near its proximal end. The epithelial 
cells show near their free ends peculiar bodies somewhat 
resembling those seen in the tip of the receptaculum sem¬ 
inis, Fig. 10. x 600. 
Fig. 17. 
Single epithelial cell from proximal end of cement gland just 
before its enlargement. Between the margin of the nu¬ 
cleus and the free end of the cell is seen the peculiar body 
from which a duct leads out through teh layer of chitin. 
x 800. 
Fig. 18. 
Longitudinal section through last part, reservoir, of cement 
gland. A small portion of the secretion which fills this 
reservoir is shown, x 800. 
Fig. 19. 
Longitudinal section through wall of the vagina, x 250. 
