What is "koolakamba"

The Koolakamba or Kooloo-Kamba is a purported hybrid species of chimpanzees and gorillas. This alleged hybrid ape species has been reported in Africa as early as the mid 19th century though no empirical evidence has been found to substantiate the existence of the creature and it has no entry in the NCBI taxonomical database. The Koolakamba was referenced in the mid-19th century in French work by Franquet (1852, as cited by Shea, 1984) and in some descriptive work of Paul Du Chaillu from 1860, 1861, 1867, and 1899; some of which was republished in 1969 (Explorations and Adventures in Equatorial Africa).