_North-central U.S._--Observations since 1950 indicate a marked increase in frequency and duration of infestations outdoors; observed in bare soil, vegetation, debris, alongside foundations in sodded areas, along sidewalks, and at edge of parking areas throughout the year; in some urban residential areas, the yards of whole blocks of houses were "alive" with this species on warm summer nights; in winter they have been found under stones, leaf debris, and soil near structures (Shuyler, 1956). =Blattella germanica= _Algeria._--Under moist leaves in woods (Lucas, 1849). _California._--Under rubbish and on date palms (Herms, 1926). _Connecticut._--In city dump under loose material, very numerous (Walden, 1922). Additional infestations of dumps by this species have been reported in New York (Felt, 1926, 1928) and New Jersey (Hansens, 1949, 1950) _England._--Swarming within a rubbish heap in February (Lucas, 1912). _Formosa._--Lives among fallen leaves on the ground (Takahashi, 1924). _North-central U.S._--Reported living outdoors near buildings and in soil under basementless buildings from early summer to late fall (Shuyler, 1956). =Blattella humbertiana= _India._--Common among decaying vegetation and on trees (Chopard and Chatterjee, 1937). _Formosa._--Normally found in sugarcane fields, pineapple fields, and grasslands where it feeds on decayed leaves and other decayed vegetable matter and dead insects. It lies concealed among and under fallen leaves and clods of earth on or close to ground and never on the upper parts of plants, except pineapple where it is found among the leaves (Takahashi, 1940). =Blattella vaga= _Arizona._--Typically an inhabitant of irrigated fields and yards, it is found in fewer numbers on the dry desert. It is found under stones, plant debris, and clumps of earth; found in greatest numbers around decaying dates on ground (Flock, 1941a). _Texas._--Beneath duff under athel trees; rather abundant in clumps of Rhodes grass (Riherd, 1953). =Byrsotria cabrerae= _Cuba._--In sea-coast woods: "The species [this and _Byrsotria fumigata_] are ground-dwelling, hiding under stones and other shelter" (Rehn and Hebard, 1927). =Byrsotria fumigata= _Cuba._--Ground dwelling, hiding under stones, etc.; also a cave inhabitant (Rehn and Hebard, 1927). =Cahita borero= _Brazil, Matto Grosso._--Beaten from tree foliage in dry scrub, from tree foliage at edge of dry riverine tangle, and from undergrowth in a dry forest area (Rehn, 1937a). =Cahita nahua= _Honduras._--All beaten from foliage along roads or in thickets, during rainy season (Rehn, 1937a). =Cariblatta antiguensis= _Virgin Islands, St. Croix._--Common under heaps of rubbish (Beatty, 1944). _Trinidad._--On herbage below bananas; all stages on _Hibiscus_ at night; in grass at dusk; on low herbage under old coconut (Princis and Kevan, 1955). =Cariblatta cuprea= _Jamaica._--In leaves on leaf mold in hillside forest (Hebard, 1916a).