1941] 
Reproductive System of a Roach 
3 
seventh is visible at the left. Their panoistic arrangement 
and structure are typical of roaches. 
The paired oviducts are short, stout tubes which convey 
the oocytes from the ovaries. Each bears a slightly dilated 
distal end which might be termed the calyx of the oviduct. 
From the latter arise six terminal or subterminal urn-shaped 
pedicels. The lumen of the pedicel is continuous with that 
Figure 2. Diploptera dytiscoides. Diagrammatic views of the 
female reproductive system. A, dorsal aspect above; B, lateral aspect 
below. BR.S, brood sac; GEN.P, genital pouch; L.GL, left accessory 
gland; O, ovary; OV, oviduct; R.GL, right accessory gland; SP, 
spermatheca; SP.GL, spermathecal gland; V, vulva; VE, vestibule. 
