_Natural host._--_Leucophaea maderae_?, Jamaica (Westwood, 1839; Sells, 1842). [This host is undoubtedly an error. Sells stated that the oötheca which contained 96 unidentified chalcids had 16 dentations at the edge; the description fits the oötheca of an oviparous cockroach and not that of _L. maderae_ (see Roth and Willis, 1954). Westwood (1839, footnote p. 423) stated that at the meeting of the Entomological Society in 1838 Mr. Sells exhibited 94 specimens of a small _Pteromalus_ (apparently identified by Westwood) obtained from one cockroach oötheca. This same record of Sells was published posthumously in 1842, although in this paper he identified the host oötheca as "_Blaberus_" _maderae_. Cameron (1955) lists a European record of _Pteromalus_ sp. from _Periplaneta americana_ citing Girault (1914) as the source of the record. Girault's record was apparently taken from Westwood's footnote mentioned above.] =Systellogaster ovivora= Gahan _Natural hosts._--_Blatta orientalis_, U.S.A., Illinois (Gahan, 1917). _Parcoblatta pensylvanica_, Canada, Ontario (Judd, 1955). _Parcoblatta_ sp., U.S.A., Ohio (Edmunds, 1952a, 1953a). "Blattid," U.S.A., Maryland (Gahan, 1917). One oötheca of _P. pensylvanica_ yielded 14 parasites with a sex ratio of 2.5 [F][F]: 1[M] (Judd, 1955). The average number of parasites in 11 oöthecae of _Parcoblatta_ sp. collected in 1950-51 was 27 wasps (Edmunds, 1952a, 1953a). The adults made two to three emergence holes in the oötheca (Edmunds, 1953a; Judd, 1955). Family EULOPHIDAE =Melittobia chalybii= Ashmead _Natural host._--_Periplaneta americana_, U.S.A., Missouri (Rau, 1940a): _M. chalybii_ is normally a parasite of Coleoptera and Hymenoptera (Peck, 1951). This is the only record from cockroach eggs. Burks (personal communication, 1956) stated that this species will attack any insect to which it is exposed and can be a serious pest in insect cultures of practically any insect order. In nature it seems to prefer the nests of aculeate Hymenoptera; Rau suggested that the parasites were probably brought into his laboratory with mud nests of _Sceliphron caementarium_ (Drury). =Mestocharomyia oophaga= Dodd _Natural host._--_Ellipsidion australe_, Australia, Queensland (Dodd, 1917). =Syntomosphyrum blattae= Burks _Natural hosts._--_Parcoblatta_ sp., U.S.A., Ohio (Burks, 1952; Edmunds, 1952a, 1953a): Ten oöthecae yielded an average of 92 wasps (Edmunds, 1952a). Five oöthecae, collected a year later, yielded an average of 74 wasps; adults sometimes made two to three exit holes in the oötheca (Edmunds, 1953a). Cockroach, U.S.A., West Virginia (Burks, 1952). =Syntomosphyrum ischnopterae= (Girault) _Synonymy._--_Epomphaloides ischnopterae_ Girault [Peck, 1951].