Melpomĕne was so styled from the dignity and excellence of her song. She presided over epic and lyric poetry. To her the invention of all mournful verses, and, particularly, of tragedy, was ascribed; for which reason Horace invokes her when he laments the death of Quintilius Varus. She is usually represented of a sedate countenance, and richly habited, with sceptres and crowns in one hand, and in the other a dagger. She has her mask on her head, which is sometimes placed so far backward that it has been mistaken for a second face. Her mask shows that she presided over the stage; and she is distinguished from Thălīa, or the comic Muse, by having more of dignity in her look, stature, and dress. Melpomĕne was supposed to preside over all melancholy subjects, as well as tragedy; as one would imagine at least from Horace's invoking her in one of his odes, and his desiring her to crown him with laurel in another. Terpsĭchŏre; that is, the _sprightly_. Some attribute her name to the pleasure she took in dancing; others represent her as the protectress of music, particularly the flute; and add, that the chorus of the ancient drama was her province, to which also logic has been annexed. She is further said to be distinguished by the flutes which she holds, as well on medals as on other monuments. Erăto, presided over elegiac or amorous poetry, and dancing, whence she was sometimes called Saltatrix. She is represented as young, and crowned with myrtle and roses, having a lyre in her right hand, and a bow in her left, with a little winged Cupid placed by her, armed with his bow and arrows. Polyhymnia. Her name, which is of Greek origin, and signifies _much singing_, seems to have been given her for the number of her songs, rather than her faithfulness of memory. To Polyhymnia belonged that harmony of voice and gesture which gives a perfection to oratory and poetry. She presided over rhetoric, and is represented with a crown of pearls and a white robe, in the act of extending her right hand, as if haranguing, and holding in her left a scroll, on which the word _Suadere_ is written; sometimes, instead of the scroll, she appears holding a _caduceus_ or sceptre. Urania, or Cœlestis. She is the Muse who extended her care to all divine or celestial subjects, such as the hymns in praise of the gods, the motions of the heavenly bodies, and whatever regarded philosophy or astronomy. She is represented in an azure robe, crowned with stars and supporting a large globe with both hands: on medals this globe stands upon a tripod.