The Bancroft-Mackerras Medal for Excellence is awarded by the Australian Society of Parasitologists and recognises outstanding contributions of its members to the Science of Parasitology. It is based particularly on work published over the last 5 years and though nominations are called yearly it is only presented when a suitable candidate is recognised.The Medal commemorates the contribution of the Bancroft-Mackerras dynasty to the development of the discipline of Parasitology in Australia from the 1860s to 1960s. The award includes a medallion, and sponsored travel to the Annual Scientific Meeting.The recipient, who is a guest of the Society for the duration of the Meeting, gives a presentation which is then published in the Meeting issue of the International Journal for Parasitology.