_Experimental prey._--_Blattella germanica_ and _Periplaneta americana_, U.S.A. (Breland, 1941): The mantids were fed 1-2 German cockroaches daily. One female mantid consumed 10 adult German cockroaches plus one oötheca and part of another in 2.5 hours. An adult German cockroach was consumed in an average of 8.5 minutes (range 5.5-15 minutes). _Blatta orientalis_, nymphs, and _Diploptera punctata_, U.S.A. (Roth and Willis, unpublished data, 1953). =Tarachodes maurus= (Stal) _Experimental prey._--Cockroaches, South Africa (Faure, 1940). =Tenodera aridifolia sinensis= Saussure _Common name._--Chinese mantis. _Experimental prey._--_Nauphoeta cinerea_ and _Periplaneta americana_, U.S.A. (Rilling, personal communication, 1957). Family GRYLLACRIDIDAE =Diestrammena apicalis= Br. v. Wattenwyl and =Diestrammena japanica= Blatchley _Natural prey._--Cockroach eggs, Japan (Asano, 1937): These are questionable records. Asano found _D. apicalis_ and _D. japanica_ beneath his house near several empty cockroach oöthecae which appeared to have been eaten into. He assumed from the condition of the oöthecae and the proximity of the stone crickets that the insects had devoured the cockroach eggs. _Experimental prey._--Eggs of _Blattella germanica_ and _Periplaneta japanica_, Japan (Asano, 1937): Seven eggs of _B. germanica_ (obtained from an oötheca being carried by a female) and eggs of _P. japanica_ (presumably in oöthecae) were fed to both species of stone crickets in the evening. The eggs were devoured by the next morning. Order DERMAPTERA Family FORFICULIDAE =Undetermined earwigs= _Experimental prey._--Cockroaches, France (Chopard, 1938): According to Chopard, Brisout de Barneville in 1848 indicated that earwigs in captivity can be fed small cockroaches. Order HEMIPTERA Family LYGAEIDAE =Clerada apicicornis= Signoret _Natural prey._--Cockroach, Hawaii (Illingworth, 1917): This predaceous bug is commonly found about buildings. Illingworth says that Kirkaldy suspected that it fed on small blattids and that Dr. Perkins saw it feeding on a dead cockroach. Family REDUVIIDAE =Spiniger domesticus= Pinto _Natural prey._--_Periplaneta americana_, Brazil, Matto Grosso (Pinto, 1927, 1927a): This bug preys principally on cockroaches and was observed infesting the walls of dwellings where it preyed on _P. americana_. =Triatoma arthurneivai= Lent and Martins _Natural prey._--_Monastria_ sp., Brazil, Minas Gerais (Martins, 1941): This bug probably feeds on cockroaches of this genus, as well as on rodents. =Undetermined reduviids=