_Periplaneta americana_, Japan (Yamaguti and Miyata, 1942); France (Brumpt, 1949); Madras (Sita, 1949). Phylum ASCHELMINTHES Class NEMATODA Order OXYUROIDEA Family SUBULURIDAE * =Subulura jacchi= (Diesing, 1861) Railliet and Henry, 1914 _Synonymy._--_Subulura jacchi_ (Marcel, 1857) [Dr. J. T. Lucker, personal communication, 1957]. _Experimental host._--_Blaberus atropos_, France (Chabaud and Larivière, 1955). Order SPIRUROIDEA Family THELAZIIDAE * =Oxyspirura mansoni= (Cobbold, 1879) Ransom, 1904 _Natural hosts._--_Pycnoscelus surinamensis_, Australia (Fielding, 1926, 1927, 1928, 1928a); U.S.A. (Sanders, 1927, 1928, 1929; Shealy, 1927); Formosa (Kobayashi, 1927); Antigua (Hutson, 1938, 1943); Hawaii (Illingworth, 1931; Schwabe, 1950, 1950a, 1950b, 1951); New Caledonia (Rageau, 1956). We have recently found (Roth and Willis, 1960) that two strains of _Pycnoscelus surinamensis_ exist; a parthenogenetic strain (from Florida), and a bisexual strain (from Hawaii) which does not reproduce parthenogenetically. The parthenogenetic strain is undoubtedly the form that has been shown to be the host of _O. mansoni_ in the United States and Antigua, because only this form is found in the New World. Probably the parthenogenetic strain was the form involved in most Pacific areas. However, from internal evidence in his papers, we concluded that Schwabe, in Hawaii, may well have been working with the bisexual strain and possibly also with the parthenogenetic strain; if this is true, then both parthenogenetic and bisexual strains of _Pycnoscelus surinamensis_ may serve as intermediate hosts of the eyeworm. _Experimental hosts._--_Periplaneta americana_, Antigua (Hutson, 1943). _Pycnoscelus surinamensis_, U.S.A. (Sanders, 1929); Australia (Fielding, 1927, 1928a); Hawaii (Schwabe, 1951). =Rictularia coloradensis= Hall, 1916 _Natural hosts._--_Parcoblatta pensylvanica_ and _Parcoblatta virginica_, U.S.A., Ohio (Oswald, 1958): Of 49 wood roaches collected, one of each species contained a single larva each.