No. 457.) CECANTHUS FASCIATUS., 7 
finally raises his tegmina in full display, and singing again to her 
she immediately reciprocates by mounting his body, but instead 
of indulging in his loving cup this time, she curves the end of 
her abdomen slightly downward, while at the same time he 
backs up and raising the end of the abdomen, conjugation is 
effected. The latter process lasts but a few seconds. After 
the sexual act, the female may be seen curving the end of her 
abdomen underneath forward, in order that she may clean the 
ovipositor with her mouth and include the genitalia in this toilet. 
I have frequently observed the males in active combat over 
the possession of the female. As a result of these struggles, 
later on in the season, the males become decidedly dilapidated 
in appearance, the legs and wings having suffered more or less 
destruction as the result of the many contests for supremacy. 
The Alluring Gland. — The function of the gland (Fig. 3), as 
above intimated, is solely for the purpose of alluring the female 
and it may be classed as a secondary sexual organ. It may be 
described as a moderately deep fossa, situated in the center of 
the metanotum of the thorax. It is bounded laterally by con- 
vex, rather obtusely rounded sides which converge and coalesce 
in front. Here anteriorly the border is flattened or depressed. 
On either side before the middle the lateral borders are strongly 
tumose, being provided with numerous sensitive hairs, the lateral 
borders behind the middle being continued into narrow convex 
ridges. The inner margins of the lateral borders are trisinu- 
ately excavated. Behind the gland lies the anterior concave 
border of the scutellum. Within the gland, occupying a point 
opposite the middle sinuation on either side (Fig. 3, c), is a flat 
brush of glandular hairs which project into the cavity obliquely. 
Just below, on either side, is another smaller brush (Fig. 3, 4) 
composed of similar hairs which are directed inwards. The pos- 
terior half of the floor of the cavity is darker in color, being chi- 
tinized, and thus showing a line of demarcation separating it 
from the forward translucent portion. The posterior floor is, 
moreover, divided by a transverse sinuous ridge, and the inner 
third here behind (Fig. 3, 7) is clothed with hairs. 
An experiment on live crickets demonstrated that when the 
hairs on the surface of the swollen anterior lateral borders (Fig. 
