Spanish soprano from the short story "The Diamond Mine" by Willa Cather, first published in McClure's magazine in October 1916. She's a briefly mentioned guest of at a get-together at fellow soprano Cressida Garnet's.
Cressida was approaching with the Spanish soprano, Mme. Bartolas, who was all black velvet and long black feathers, with a lace veil over her rich pallor and even a little black patch on her chin. I beckoned them.