790 Wisconsin Academy of Sciences, Arts, and Letters. 
Fig. 48. Median sagittal section through the proximal portion of the 
female reproductive organs. X 50. At p is the passage between 
the vagina, Vg., and the seminal recepticle (not drawn in this 
figure). Two dotted lines a—a and b—b where the connection 
between oviductus communis, Odt. Com., and vagina, Vg., is 
found two sections from the one here figured. Dark mass, sperms. 
Cuticular layers stippled. Epithelial layer shaded. At p and at 
a positions from which sections 54 and 55 were cut. 
PLATE LXXI. 
Fig. 49. View of last portion of oviducts, Odt., the oviductus communis, 
Odt. Com. and the vagina, Vg. X 30. Cu. Cuticular lining of 
the vagina. 
Fig. 50. View of the posterior end of the eighth abdominal segment 
showing the T—shaped opening, vulva, into the vagina, v., the 
free posterior end of the vulvar lamina. 
Fig. 51. Transverse section through the ovaries showing the many 
ovarian tubules sectioned and the oviduct, Odt., along each side. 
In the center of the figure is the heart, with stippled wall. X 
50. 
Fig. 52. Transverse section through wall of the passage leading from 
the vagina to the receptaculum seminis (Figs. 47 and 48, p). 
The long hollow setae are on the inner free surface. X 875. 
Fig. 53. Surface view of portion of lateral wall of passage between 
vagina and seminal recepticle (Fig. 48, p). In this view the 
hollow setae have been cut transversely and are shown at s as 
little circles; the dark lines between these represent the strings 
of spermatozoa. X 740. 
Fig. 54. Transverse section through the reproductive organs, the cuti¬ 
cular layer only drawn and stippled. Cu. Co. section of cuti¬ 
cular collar, p., passage between vagina and seminal recepticle 
(Figs. 47 and 48, p). The two large folds of the wall of the 
vagina, V, are shown. Cut in about position represented in figure 
48 at p. X 105. 
Fig. 55. Transverse section cut at about position a in figure 48. e, 
egg; ch, chorion of same; m, muscles of common oviduct and 
of vagina. X 105. 
Fig. 56. Longitudinal section through dorsal wall of vagina. X 875. 
