or Ant-lion, in zoology; a genus of insects of the nemoptera order. There are 15 species, of which the most remarkable is the formicarius, or ant-eater. The perfect insect is oblong, and of a brown colour. Its head is broad, with two large eyes on the sides, and two antennae beneath. The neck is rather long, cylindrical, and narrower than the head. The thorax seems composed of two parts; one anterior,