Bothroponera soror (Emery) Akenge, [[worker]], [[queen]]; Medje, [[worker]], [[queen]]; Ngayu, [[worker]]; Niangara, [[worker]]; Avakubi, [[worker]]; Niapu, [[worker]]; Faradje, [[worker]] (Lang and Chapin). Forty-one workers and three dealated females. All but three of these specimens were taken from the stomachs of toads (Bufo supcrciliaris, polycercus, funereus, tuberosus, and regularis); one from Faradje was taken from the stomach of a frog (Rana occipitalis). Arnold records this as a rather rare species in Rhodesia. " It usually nests under stones, and has a very strong smell of cockroaches. The colonics do not usually comprise more than two dozen individuals." Two of the specimens from Medje were taken by Mr. Lang while they were crawling on tree trunks and also on the tents of the expedition. He notes that, "when crushed, they gave off a stench reminding one of a bug."

Published as part of Wheeler, W. M., 1922, The ants collected by the American Museum Congo Expedition., pp. 39-269 in Bulletin of the American Museum of Natural History 45 on page 74