This is, indeed, the case with nearly all gasteromycetes.
"Fungi: Their Nature and Uses"
Mordecai Cubitt Cooke
In gasteromycetes, the second family, a true hymenium is also present, but instead of being exposed it is for a long time enclosed in an outer peridium or sac, until the spores are fully matured, or the fungus is beginning to decay.
"Fungi: Their Nature and Uses"
Mordecai Cubitt Cooke
In the gasteromycetes the spores are produced in many cases, probably in most, if not all, at the tips of sporophores; but the hymenium, instead of being exposed, as in the Hymenomycetes, is enclosed within an outer peridium or sac, which is sometimes double.
"Fungi: Their Nature and Uses"
Mordecai Cubitt Cooke