Description: English: Female of Cosmiomma hippopotamensis, from description as Ixodes bimaculatus, Denny 1843. Date: 1843. Source: Henry Denny: Description of Six supposed new species of Parasites. In Annals and Magazine of Natural History'# 1843, vol. XII, no. LXXVIII, p. 312-316, plate XVII (fig. 1 and 2), Internet Archive at annalsmagazineof11lond. Author: Henry Denny (1803-1871).