This sac has been already referred to as a coelomoduct.
Levites, Prophet, Sac Rifice).
sp', Spermathecal sac involving the last.
Thus, in Philaemon pungens (Lambert) it has the form of a large sac, into which open by a single orifice the conjoined oviducts.
In Hyperiodrilus the whole spermatheca is thus included in a corresponding sac, which is of great extent.