Found in the host's colon, particularly the anterior portion. _L. striata_ (fig. 2, D) was found in 29 percent of 1,400 _B. orientalis_ and in 2 of 30 _P. americana_ (Kudo, 1926, 1926b). Yakimov and Miller (1922) found the organism in 9.6 percent of 124 specimens of _B. orientalis_. Zasukhin (1930) found 8.6 percent of over 3,000 _B. orientalis_ infested. Grassé (1926, 1926a) identified corrugations on the surface of _L. striata_ as a bacterial parasite which he named _Fusiformis lophomonadis_. =Prolophomonas tocopola= Cleveland et al. _Natural host._--_Cryptocercus punctulatus_, California, Oregon, Virginia, West Virginia (Cleveland et al., 1934): Not abundant. Family HOPLONYMPHIDAE =Barbulanympha estaboga= Cleveland et al. _Natural host._--_Cryptocercus punctulatus_, U.S.A., Appalachian and Pacific coast areas (Cleveland et al., 1934). _Barbulanympha coahoma_ (Cleveland et al., 1934) represents the diploid form of _B. estaboga_ (Cleveland, 1953). =Barbulanympha laurabuda= Cleveland et al. _Natural host._--_Cryptocercus punctulatus_, U.S.A., Appalachian and Pacific coast areas (Cleveland et al., 1934): This species, _B. ufalula_, and _Rhynchonympha tarda_ occur in all parts of the colon, especially in the enlarged, flexed part near the ileum. =Barbulanympha ufalula= Cleveland et al. _Natural host._--_Cryptocercus punctulatus_, U.S.A., Appalachian and Pacific coast areas (Cleveland et al., 1934). =Barbulanympha wenyoni= Cleveland _Natural host._--_Cryptocercus punctulatus_, U.S.A., Pacific coast area (Cleveland, 1953). =Rhynchonympha tarda= Cleveland et al. (Fig. 3, D) _Natural host._--_Cryptocercus punctulatus_, U.S.A., Pacific coast area (Cleveland et al., 1934): Fairly abundant in every specimen examined from Pacific coast. =Urinympha talea= Cleveland et al. (Fig. 3, C) _Natural host._--_Cryptocercus punctulatus_, U.S.A., Appalachian and Pacific coast areas (Cleveland et al., 1934): Present in fairly great numbers in every cockroach examined. Family STAUROJOENINIDAE =Idionympha perissa= Cleveland et al. _Natural host._--_Cryptocercus punctulatus_, U.S.A., Appalachian area (Cleveland et al., 1934): Present in only a few specimens. Family TRICHONYMPHIDAE =Trichonympha acuta= Cleveland et al. _Natural host._--_Cryptocercus punctulatus_, U.S.A., Appalachian and Pacific coast areas (Cleveland et al., 1934). =Trichonympha algoa= Cleveland et al. (Fig. 3, E) _Natural host._--_Cryptocercus punctulatus_, U.S.A., Appalachian and Pacific coast areas (Cleveland et al., 1934): Fairly abundant and present in most specimens.