McCook (1877) excavated in February a nest of _Formica rufa_ in Pennsylvania. A hundred or more lively cockroaches occupied a part of the nest that contained few ants. Near the cockroaches McCook also found a colony of _Termes flavipes_. _Ischnoptera deropeltiformis_ has been found in the company of ants, but it is probably not myrmecophilous (Donisthorpe, 1900). Mann (1911) found an "_Ischnoptera_" sp. (probably a species of _Parcoblatta_) abundant in the nests of, and tolerated by, _Camponotus maccooki_ Forel in California. Dead and mutilated specimens of this cockroach were common in the nests of "Formicas." "_Ischnoptera_" sp. was also common in the nests of _Veromessor andrei_ (Mayr) [= _Stenamma andrei_]. Hebard (1917) reported that W. M. Wheeler collected _Eremoblatta subdiaphana_ in Arizona as an ant guest. Rehn (1906a; Rehn and Hebard, 1927) reported that _Pholadoblatta inusitata_ had also been taken by Wheeler from the galleries of a jumping ant, _Odontomachus clarus_ Roger [= _O. haematodes insularis_ Guérin var. _pallens_ Wheeler; Brown (personal communication, 1958)], on Andros Island, Bahamas; Rehn and Hebard (1927) stated that "This genus and species is the only blattid, which is presumably a myrmecophile, known from the West Indies." Rehn (1932a) reported _Dendroblatta sobrina_ as taken in an ant nest in a tree in the Amazon Basin. _Tivia australica_ was taken in an ant nest in Australia (Princis, 1954). The male of _Compsodes schwarzi_ was taken in an ant nest in the Santa Rita Mountains of Arizona (Ball et al., 1942). A male and female of _Stilpnoblatta minuta_ were taken in a migrating column of the ant _Myrmicaria natalensis_ Sm. subsp. _eumenoides_ Gerst. in Nyasaland (Princis, 1949). Princis cautioned that it is premature to derive any inference from this, possibly accidental, association. Four females of _Parcoblatta desertae_ were taken about a nest of an ant, _Ischnomyrmex_ sp. (Hebard, 1943a). A nymph of _Parcoblatta virginica_ was found in a nest of _Formica_ sp. (Hauke, 1949). _Chorisoneura texensis_ has been found in nests of webworm in Florida (Rehn and Hebard, 1916). Karny (1924) in Malaya found an oötheca of _Aristiger histrio_ (sp.?) between leaves (_Costus_ sp.) that had been stuck together by a thysanopteron, _Anaphothrips_ sp. He pointed out that the oötheca would not adhere to leaves that were not stuck together but would fall to the ground.