Marshall—Reproductive Organs of the Female Moth. 7 
or, oftener, for only a part thereof. Near the free end of each 
cell is a peculiar small ovoid body which does not so closely re¬ 
semble a nucleus as the bodies just described as present under 
the chitinous layer (Fig. 14). They are quite homogeneous, 
stain darker than the surrounding cytoplasm, but are not seen 
distinctly in all cells of this region. Towards the proximal 
end of the thin glandular part just before it widens to form 
the reservoir, a distinct change is noted in the structure of the 
wall. The epithelial cells of which it consists are here of the 
same length as those just described, but are much wider. The 
nucleus is also different here, and, instead of lying with its long 
axis parallel to the long axis of the cell, lies transversely across 
it; it is also bent with the convex surface towards the basal end 
of the cell. Along its other surface which is concave, lies a 
peculiar body, rounded in outline, of a dark homogeneous appear¬ 
ance, with a yet darker small central portion from which radiate 
a number of dark lines none of which reach the periphery (Fig. 
17). Similar cells have been described in many glandular tis¬ 
sues of insects by Dierckx (3), Glison (5), and in the reproduc¬ 
tive organs of the Orthoptera by Fenard (4). From the dark 
central portion of this body a duct passes into the lumen of 
the gland penetrating the chitinous layer which is here present 
as in other parts of the gland. 
The wide proximal part of the gland has become a reservoir 
to hold the secretion of the other parts. Internally there is a 
chitinous layer much wider than in the glandular part, and very 
much folded. The epithelial layer has undoubtedly become 
functionless, and is represented by a thin layer of cytoplasm, 
without cell boundaries, in which are scattered a number of 
ovoid nuclei here much smaller than in any other portion of 
the gland. There is an outer layer of longitudinal muscles 
which is not present in other parts of the gland. 
Vagina .—Tbe vagina is a continuation of the oviductus com¬ 
munis from which it differs, externally, only in its slightly 
greater width. Near its distal margin, along the dorsal wail, 
it bears a saccular evagination which receives the duct from the 
receptaculum seininis; nearly opposite to this the ductus sem- 
inalis opens. 
