These two covers, by Gervasio Gallardo, are what Ballantine's original covers were like. These were the 1971 printings of stories and poems.
On Fungi from Yuggoth, the octopuslike thing with a green Hallowe'en masklike face ain't scary. He doesn't look much like a fun guy either (fungi = fun guy, get it? yuk-yuk).
I bet the bug-eyed wingless flying guys were supposed to be Night-Gaunts. But we all know that Lovecraft's Night-Gaunts had leatery, batlike wings, the way he described them.
Of course, I guess one could argue that they didn't use those wings while flying ...