Cuterebrid fly. The percentage of infestation, which approaches 14%, seems rather high; Seton mentions only two cases in ten years of observation. However, these bots have been known for many years; Clark (1796) named and described the first species known to attack rabbits. Clark also established the genus Cuterebra, which has subsequently been divided into two genera; Cuterebra Clark, and Bogeria Austen. Among other observers of these Cuterebrid bots should be mentioned Townsend (1893; 1915; 1917) who studied both the larval and the adult forms; Hall (1921; 1925) who observed these larvae in many animals; Parker and Wells (1919) who have conducted laboratory experiments on the infestation of the host; and Cameron (1926) who published on the occurrence of Cuterebra in western Canada. Cameron included a careful description of the larval form of a Cuterebrid thought to have been Cuterebra grisea Coq.