Jaculus also called the amphiptere, is a small winged serpent of myth. They seem to be smaller cousins of the coatl of Aztec Mythology, dragonelles, and wyverns. Legend says they lived in swarms in the spice trees of Arabia, frankincense trees in particular. When the Arabs came to pick the valuable spices, the jaculi would attack them. The jaculus had a tail that ended in a sharp arrowhead, like some dragons. The jaculi attacked by straightening their bodies and flying or falling backwards down upon the astonished Arab, like a hurled javelin, piercing him, causing injury or death. The jaculi liked the fragrance that the spices gave off.