"According to the lore of hobbits, an evil race of cannibal spirits called the mewlips settled in certain marshlands of Middle-earth. Hoarding phantoms very like the dreaded barrow-wights they seemed, but they made their homes in foul and dank swamps. Travellers in their lands always walked in peril, for many were said to be waylaid by these beings." - Tolkien Reader
Durn it. We goofed... sort of. Tharonwe could have had Mewlips as his "orcs", per se. Phooey. Just goes to show I need to spend more time in Books discussions.
Guess it's too late now..... or is it? >:-)