4 Wisconsin Academy of Sciences, Arts, and Letters. 
ovarian tubules and oviducts could at this stage possess would 
be to aid in expelling the eggs, and we find the parts which 
are useful in doing this, the muscular layers, still normal, while 
the other part of the wall, epithelial cells, shows a marked de¬ 
generation. 
Beceptaculum seminis. —The seminal receptacle is double con¬ 
sisting of a larger bladder-like, and a smaller tubular piece, the 
latter of which is pointed and near its distal end bears a thin 
coiled appendix (Fig. 8). The two parts have a common duct 
which opens into the apex of a saccular outgrowth near the dis¬ 
tal end of the vagina. The relative size and shape of the two 
parts can best be understood by the figure from which there 
are, however, many variations, either in a general increase or 
diminution in size of the receptacle, or a relative change in one 
part to the other. From an external view the duct appears to 
come equally from each part, a section shows at first a similar 
condition; the cells lining the duct are more like those in the 
smaller than in the larger part, being in fact the same cylin¬ 
drical cells, shortened, but not, however, flattened as in the 
larger part of the receptacle, flflie appendix, near the distal end 
of the smaller part, shows a considerable variation in length. 
In the specimens of Eemileuca examined both parts contained 
spermatozoa. 
An examination of sections shows the wall in the two parts 
to be different, similar, however, in being lined over the entire 
internal surface with chi tin. In the smaller part of the recep¬ 
tacle (glandular part), the greater portion of the wall is a layer 
of long cylindrical epithelial cells (Fig. 9) which show a de¬ 
cided striation at both ends but more marked in the free than 
in the basal end. The large ovoid nucleus in each cell contains 
a number of chromatin granules connected by a linin network. 
On the outer surface of the wall are a number of circular mus¬ 
cles which, three or four layers thick near the proximal end, 
gradually diminish until but a single row is left at the apex. 
Sections through the tubular appendage of this part (Fig. 10) 
show differences from what we have just described. The cell 
boundaries were not visible, the nuclei have the same structure 
