Sobolev (1937) found 72 percent of _Blattella germanica_ collected in Gorkov (U.S.S.R.) infected with _Blatticola blattae_. The mean number of worms per host was 1.8, the maximum 5. Sondak (1935) found about 30 percent of 788 _B. germanica_ collected in Leningrad to be infected with _B. blattae_. Groschaft (1956) regularly found only single worms in _B. germanica_, collected in a laboratory in Prague, except for two females that contained 2 and 3 worms each. =Blattophila sphaerolaima= Cobb, 1920 _Synonymy._--_Aorurus sphaerolaima_ (Cobb, 1920) Travassos, 1929. Although Chitwood (1932) indicated that the taxonomic position of this nematode is questionable, Chitwood and Chitwood, 1934, apparently accepted it as a valid species in describing the variety _javanica_. _Natural host._--_Panesthia laevicollis_ [Cobb recorded the host as _Panesthia brevicollis_, but no such cockroach exists. Van Zwaluwenburg (1928) and Caudell (in Chitwood, 1932) believed that Cobb meant _Panesthia laevicollis_. According to Gurney (personal communication, 1957) Caudell's notes show that in 1933 he wrote to Dr. Chitwood and explained that he had compared Cobb's figure of the cockroach with _laevicollis_ Saussure (figures and description) and had found them the same.] Australia, New South Wales (Cobb, 1920). =Blattophila sphaerolaima var. javanica= Chitwood and Chitwood, 1934 _Natural host._--_Panesthia angustipennis_, Philippine Islands (Chitwood and Chitwood, 1934). =Blattophila supellaima= Basir, 1941 _Natural host._--_Supella supellectilium_, India, Aligarh (Basir, 1941). =Cephalobellus brevicaudatum= (Leidy, 1851) Christie, 1933 _Synonymy._--_Thelastoma brevicaudatum_ Leidy, 1851 [Christie, 1933]. _Thelastoma indiana_ Basir, 1940 [Basir, 1949]. _Natural host._--_Leucophaea_ sp., India, Aligarh (Basir, 1940, 1949). =Cephalobellus magalhāesi= (Schwenck, 1926) Basir, 1956 _Synonymy._--_Bulhỡesi magalhāesi_ Schwenck, 1926; _Thelastoma magalhāesi_ (Schwenck, 1926) Travassos, 1929 [Basir, 1956]. _Natural host._--"Barata selvagem," Brazil, São Paulo (Schwenck, 1926). =Euryconema paradisa= Chitwood, 1932 _Natural host._--_Eurycotis floridana_, U.S.A., Florida (Chitwood, 1932). =Galebia aegyptiaca= (Galeb, 1878) Chitwood, 1932 _Synonymy._--_Oxyuris aegyptiaca_ Galeb, 1878; _Blatticola aegyptiaca_ (Galeb, 1878) Schwenck, 1926 [Chitwood, 1932]. _Natural hosts._--_Blattella germanica_, Brazil (Schwenck, 1926). _Polyphaga aegyptiaca_, Egypt? (Galeb, 1878). =Hammerschmidtiella diesingi= (Hammerschmidt, 1838) Chitwood, 1932 _Synonymy._--_Anguillula macrura_ Diesing, 1851; _Aorurus diesingi_ (Hammerschmidt, 1838) Travassos, 1929; _Streptostomum gracile_ Leidy, 1850; _Oxyuris diesingi_ Hammerschmidt, 1838; _Oxyuris blattae orientalis_ Hammerschmidt, 1838 [Chitwood, 1932]. _Oxyuris macrura_ of Lankester (1865).