BLUE-BOTTLE (Musca vanitaria), a large fly (see DrP TERA), common in Europe generally and in great disfavour on account of its habit of laying its eggs in meat. The body is blue (whence the name) and the flight noisy. M. caesar, the green bottle, is only less common and is also found in America. The blow-fly (Sarcopjzaga carnaria) is larger, with an abdomen of blackish-brown, assuming a blue tint in certain aspects. The larvae are not confined to dead animals, but occur on living earth worms and even on sheep. S. mortuorum, with a steel-blue abdo men, is an allied species. For the plant, blue bottle, see CORN FLOWER.