The wasps that are known to capture cockroaches, and summaries of their biology, are listed below. WASPS THAT PROVISION THEIR NESTS WITH COCKROACHES Family POMPILIDAE =Pompilus bracatus= Bingham _Natural hosts._--Cockroaches, India (Bingham, 1900). =Pompilus= sp. _Natural host._--Cockroach, Nyasaland (Lamborn _in_ Poulton, 1926): The wasp was collected leading a nymph of the cockroach by its antenna. The cockroach was in a stupefied state, and its antennae were bitten off to about half their length. =Salius verticalis= Smith _Natural hosts._--Cockroaches, India (Bingham, 1900). Family AMPULICIDAE The species of _Ampulex_ do not appear to make special nests in which to lay their eggs but drag their prey to any convenient hole, or crack in the ground (Arnold, 1928). Although many species of _Ampulex_ have been described, the prey of only a small number of species have been discovered, but the known prey are all cockroaches. =Ampulex amoena= Stål _Synonymy._--_Ampulex novarae_ Saussure [Krombein, personal communication, 1957]. _Natural hosts._--_Periplaneta americana_ and _Periplaneta australasiae_, both as small nymphs, Formosa (Sonan, 1924, 1927): The wasp stings a nymph about one inch long and carries it to a suitable place, such as bamboo pipes, folds of newspaper, or books (in houses), for oviposition. _Periplaneta picea_, Japan (Kamo, 1957; Kohriba, 1957). _Experimental hosts._--_Periplaneta picea_, Japan (Kamo, 1957; Kohriba, 1957). Kamo (1957) observed that in the field both males and females sucked juices from wounds they made in the stems of _Clerodendron_ _trichotomum_ Thunberg or _Ilex rotunda_ Thunberg. Kohriba (1957), on the other hand, found both sexes sucking sap of _Abies_ sp. and other trees from points injured by the rostrum of cicadas. Kamo (1957) observed that the female wasp grasped the cockroach by a tergum and stung it several times in the thorax. The wasp always amputated the antennae of the prey and sucked up the fluid oozing from the cut antennae. The wasp egg was placed on the mesocoxa of the cockroach. In the laboratory as many as three cockroaches, each with a wasp egg, were stored in artificial nests per day. Kohriba (1957) observed similar behavior in the laboratory and made these additional notes. The paralyzed cockroach could move its legs and was led to the nest by the wasp which seized its antennae. The egg hatched in 2 days, and after sucking up body fluid for 2 days the larva began to devour the prey. Three days later the larva spun its cocoon, and about one month after spinning a female wasp emerged. =Ampulex assimilis= Kohl