12 
Wisconsin Academy of Sciences, Arts, and Letters. 
EXPLANATION OF PLATE I. 
Fig. 1. Reproductive organs, the eight avarian tubules have been re¬ 
moved. x 3. 
Fig. 2. More enlarged view of part of same. The different parts are 
not in their normal positions, the receptaculum seminis is 
thrown over to the right; the vagina is shown in lateral 
and the oviducts in dorsal view. 
Fig. 3. Ventral view of eighth and ninth abdominal segments show¬ 
ing the opening o. b. into the bursa copulatrix on the ante¬ 
rior margin of the eighth, and the opening of the vagina 
on the ninth segment. Enlarged. 
Fig. 4. A single ovarian tubule. 
Fig. 5. Longitudinal section through the wall of distal part of an 
ovarian tubule, x 320. 
F.g. 6. Transverse section of wall of same, near the middle, x 250. 
Fig. 8. Receptaculum seminis. Enlarged. 
