The Pretas are beings of the nature of ghosts and goblins who have recently inhabited the earth, and are often of gigantic size and terrific appearance, with dried-up limbs, hairy countenances, enormous bellies, ever consumed with hunger and thirst, and yet never able to eat and drink by reason of their contracted throats. Some are represented as trying to swallow sparks of fire; others try to eat up dead bodies, or their own flesh. Possibly this form of re-birth was invented to deter the laity from withholding food from the monks. The Pretas inhabit a region above the hells. Some, however, assign them habitations above the surface of the earth or in desert places on the earth itself. The Asuras or Daityas are evil demons who, like the Titans of Greek mythology, are always at war with the gods. They dwell under the foundations of Mount Meru, as far underneath the surface of the earth as their great enemy Indra is above it. In short, if he may be supposed to live at the zenith, they live at the nadir, and their battle-field is on the slopes of Meru. Closely connected with them are the Rākshasas, who are also enemies of the gods and are represented as monsters of frightful form and man-eating propensities. They haunt cremation-grounds and cemeteries and way-lay human beings in solitary places to devour them. Then there is a class of very malignant demons called Piṡāćas (described in ‘Brāhmanism and Hindūism,’ p. 242), who are the authors of all evils. On the other hand, the Yakshas and Yakshiṇīs are a class of good genii ruled over by Kuvera, ‘god of wealth,’ who is often referred to in Buddhist writings under his patronymic Vaiṡravaṇa (Pāli Vessavaṇo)[103]. These beings are commonly represented in sculptures in human form and held to be harmless, though some Buddhist legends describe them as cruel. Stories are told about some of them being converted to Buddhism. Then come the Nāgas, who are constantly alluded to. They properly belong to a class of serpent-demons, having human faces with serpent-like lower extremities, who live in one of the lower regions below the earth called Pātāla, or under the waters. They are introduced into Buddhist sculptures as worshippers of the Buddha and friends of all Buddhists, but usually represented as ordinary men. The Nāga Mućalinda (also Mućilinda), who sheltered Buddha, was a real serpent (see p. 39). Nāga-kanyās or female Nāgas (serpents from the waist downwards) are also not uncommon[104]. In Kashmīr Nāgas are connected with fountains and the sources of rivers. Then there are the Mahoragas, ‘great dragons,’ who also belong to the Nāga class of demons.