_Distribution._--Tropical and subtropical parts of the world as far north as New York City, and all of Europe except the northern part (Kieffer, 1920; Townes, 1949). The wide distribution of _Evania_ has been attributed to the abundance of host cockroaches on ships between the Tropics (Haldeman, 1847). Kieffer (1903) appears to have shown some correlation between the numbers of species of cockroaches found in various geographical regions and the numbers of species of evaniids found in similar regions. However, the number of blattids he listed is small. =Evania dimidiata= Fabricius _Synonymy._--_Evania abyssinica_ Westwood [Schletterer, 1889]. _Natural host._--_Blatta orientalis_, Egypt? (Alfieri, 1914). =Evania subspinosa= Kieffer _Natural host._--_Periplaneta_ sp., Fiji (Lever, 1946): Although Lever (1946) listed this species as a cockroach-egg parasite, he did not state that he actually reared it from _Periplaneta_ oöthecae. =Hyptia dorsalis= of Ashmead _Synonymy._--Dr. H. Townes, (personal communication, 1956) believes that this wasp was probably either _H. reticulata_, _H. harpyoides_, or _H. thoracica_; it is not possible to tell which without reexamining Ashmead's specimens; these apparently have been lost. _Natural host._--_Parcoblatta pensylvanica_, U.S.A., Mississippi (Ashmead, 1900). =Hyptia harpyoides= Bradley _Natural hosts._--_Parcoblatta virginica_, U.S.A., Ohio (Edmunds, 1952a, 1953a, 1954). _Parcoblatta pensylvanica_, U.S.A. (Muesebeck, 1958). _Parcoblatta uhleriana_, U.S.A., Natick, Mass.: Oötheca collected by L. Roth, May 17, 1956; wasp emerged June 12, 1956 (pl. 33, B); determined by Dr. H. Townes. The keel region of the oötheca of _P. uhleriana_ (pl. 18, B) is different from that of any other species of _Parcoblatta_ (Hebard, 1917; Lawson, 1954) so there can be no doubt as to the species of cockroach parasitized by this wasp. _Development._--The last instar larva overwinters inside the cockroach oötheca (Edmunds, 1954). Five oöthecae yielded one parasite each (Edmunds, 1953a). _Distribution._--Canada, Ontario. U.S.A.: New Hampshire and Minnesota to South Carolina, Mississippi, Texas, and Kansas. Upper and Lower Austral Zones (Townes, 1951). =Hyptia reticulata= Say _Natural host._--_Parcoblatta pensylvanica_, U.S.A., Missouri (Rau, 1940). Adult wasps have been taken on parsnip, _Pastinaca sativa_ (Robertson, 1928). _Distribution._--U.S.A.: Pennsylvania to Florida and Louisiana. Mexico. Upper Austral to Tropical Zones (Townes, 1951). =Hyptia thoracica= (Blanchard) _Natural host._--_Parcoblatta pensylvanica_, U.S.A., Ohio (Edmunds, 1952a, 1953a, 1954). _Adult behavior._--Copulation was rapid, lasting only a few seconds. Blooms of _Asmorrhiza longistylis_ were placed in a cage with adult wasps. The insects were attracted to and fed on the flowers (Edmunds, 1954).