not yet ascend to heaven" (Visser 1913:73) or "Heavenly Dragons which do not yet ascend" (Carr 1990:113). Asterisms Tianlong Heavenly Dragon names both the Western constellation Draco and a star in the Chinese constellation Azure Dragon. Tianlongza "Heavenly Dragon Seat/Constellation" is the Chinese translation of Draco (from Latin "Dragon"), a constellation near the north celestial pole. The (1578 CE) Bencao Gangmu pharmacopeia's entry for long "dragon" describes (Read 1934:301) "a pearl under its chin", and Read notes, The constellation Draco has the appearance of guarding and encircling the northern pole which is the centre of the movement of the fixed stars. The Chinese paintings of the Dragon straining after a mystical "Pearl" undoubtedly relate to this relationship to the North Pole Star, though other explanations are given for this. (1934:306-7) Tianlong "Heavenly Dragon" is the 3rd star in Fangxiu "Room (Chinese constellation)" and corresponds to the Western constellation Scorpius. "Room" is the 4th of the Twenty-eight mansions in the Azure Dragon, which is one of the celestial Four Symbols. Wolfram Eberhard (1968:243) notes, "When the dragon star appeared in the sky it was customary to make a sacrifice supplicating for rain," and this springtime dragon festival occurs on the 2nd day of the 2nd month. Centipede The Bencao Gangmu entry for wugong "centipede" lists tianlong "heavenly dragon" as an alternate name. Li Shizhen's commentary reviews earlier Chinese commentators and texts. The Zhuangzi (2, tr. Mair 1994:20–21) says, "People eat meat, deer eat grass, [] giant centipedes savor snakes, hawks and crows relish mice." The Huainanzi (17, tr. Carr 1990:111) says, "The [] ascending snake can drift in the mist, yet it is endangered by the [] centipede." The Erya dictionary (15) defines jili "thorns; puncture vine; bramble" as jieju "centipede; cricket"; which Guo Pu's commentary says resembles a huang "locust" with a large abdomen, long horns, and which eats snake brains. Although jieju can also mean xishuai "cricket", Li concludes it means the snake-controlling wugong "centipede" that the Fangyan dictionary (11) also calls maxian "horse/giant millipede" or juqu . According to Eberhard (1968:159), centipedes were snake predators, and "the enmity between snake and centipede occurs in many folktales and customs." Buddhist usages In Chinese Buddhist terminology, tianlong means either "heavenly Nāgas (dragon gods)" or "Devas (heavenly gods) and Nāgas". First, tianlong means "heavenly dragon/nāga" as the first of four nāga classes in Mahayana tradition (tr. Visser 1913:21-2). Heavenly Nāgas (),