Another _vav_ in Vadhwan is haunted by a ghost called Mahda, who drowns one human being every third year as a victim. But a male spirit, named Kshetrapal, resides in the _kotta_ (or entrance) of the _vav_, and saves those who fall near the entrance. Those who fall in any other part are, however, sure to be drowned. There is in Mirzapur a famous water-hole, known as Barewa. A herdsman was once grazing his buffaloes near the place, when the waters rose in fury and carried him off with his cattle. The drowned buffaloes have now taken the form of a dangerous demon known as _Bhainsasura_, or the buffalo-demon, and he lives there in company with the Naga and the Nagin and none dare fish there until he has propitiated these demons with the offerings of a fowl, eggs and goat. Until recently the Bengalis believed that a water-spirit in the form of an old hag called _Jaté Buddi_ haunted tanks and ponds and fettered with an invisible chain the feet of persons who approached her territories. Even to this day the name of this witch is taken to frighten naughty children. Another Bengal spirit, called _Jakh_, was believed to reside in tanks and to guard hidden treasure. Woe to the man who threw covetous eyes on that treasure! The Sion Indians believe in a water-demon called Unk-tahe who, like the Siamese spirit Pnuk, drags underneath the water those who go to bathe in it.[39] Corresponding to these haunted wells are the water holes in Scotland, known as the “cups of the fairies,” and the Trinity Well in Ireland into which no one can gaze with impunity, and from which the river Bayne once burst forth in pursuit of a lady who had insulted it. In Indian folklore this wicked class of water-nymphs is known as Apsarás. The village of Mith-Báv in Ratnagiri is a well-known resort of these nymphs and the villagers relate many a thrilling story of persons drowned and carried off by them in the river. Another favourite habitat of these water-spirits is a tank in the village of Hindalem in the same district. Every reservoir of water in Thana is believed to be a habitat of water-nymphs. Some, however, believe that they dwell only in those lakes in which lotuses grow. The images of seven _apsarás_ are particularly worshipped by the people, _viz._, Machhi, Kurmi, Karkati, Darduri, Jatupi, Somapa and Makari.