Hylas

…For the most part, they are friendly to humans, making gardens and pastures bloom, watching over livestock, providing game for hunting, granting prophetic powers to those who drink or bathe in their springs, and curing illnesses. However, they are also believed to sometimes intimidate travelers passing through the forest, possess those who see them and drive them insane, kidnap people, as in the case of Hylas, a beautiful young man from the Argo, who was lured into a spring, or take revenge on those who do not respond to their courtship, as in the case of Daphnis, a shepherd from Sicily, who was blinded. For this reason, they have been the subject of worship throughout Greece since ancient times, and offerings are often made to springs and caves. …

*Some of the terminology explanations that mention "Hylas" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…人間に対しては，庭園や牧場に花を咲かせ，家畜を見張り，狩りの獲物を提供し，泉の水を飲むか浴する者に予言の力を授けたり，病を治してやるなど，おおむね友好的である。しかしときには森の中を通る旅人を怖がらせたり，その姿を見た者にとりついて正気を失わせたり，またアルゴ船乗組員の美少年ヒュラスHylasを泉に引きこんだように，人をさらったり，シチリア島の羊飼いダフニスDaphnisを盲目にしたように，求愛に応じない者に報復するなどの害をなすこともあると信じられた。このため彼女たちは古くからギリシア各地で崇拝の対象となっており，しばしば泉や洞に供物がそなえられた。…

※「Hylas」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報