The term MORLOCKS' 'THE TIME MACHINE' PREY refers to the Eloi, a humanoid species that appears in the 1895 science fiction novel The Time Machine by H. G. Wells. The Eloi are a gentle, childlike race of people who live in small communities in a peaceful and idyllic future world. They are preyed upon by the Morlocks, a subterranean race of carnivorous, ape-like creatures. The Eloi are described as being 4 letters long, which is why they are referred to in the crossword solution.