Isotricha caulleryi Weill
Natural host.—Periplaneta americana, Indochina (Weill, 1929): Alimentary canal.
Order SPIROTRICHA
Family BURSARIIDAE
Balantidium blattarum Ghosh
Natural host.—Periplaneta americana, India (Ghosh, 1922; Bhatia and Gulati, 1927); Gold Coast Colony (Macfie, 1922): Intestinal tract.
* Balantidium coli (Malmsten)
Experimental vector.—Cockroach, Venezuela (Tejera, 1926).
Balantidium ovatum Ghosh
Natural host.—Periplaneta americana, India (Ghosh, 1922a; Bhatia and Gulati, 1927); Indochina, Saigon (Weill, 1929): Intestinal tract.