1. Chakravarty, M.: Systematic position of some genera and classification of the suborder Cephalina Delage and Herouard. Proc. Zool. Soc., Calcutta12, 71?81 (1959)
2. Crawley, H.: List of Polycystid gregarines of the United States. Proc. Acad. Nat. Sci., Philadelphia55, 41?58 (1903)
3. Grassé, P.P.: Traité de Zoologie. Tome I, Fascicule II. Paris Masson et Cie 1953
4. Haldar, D.P., Chakraborty, N.: Observations on three new species of cephaline gregarines (Protozoa: Sporozoa) from insects. Acta Protozool.17, 233?245 (1978)
5. Henry, D.P.:Hirmocystis termitis (Leidy) andKofoidina ovata gen. nov., sp. nov. from termites. Arch. Protistenkd.80, 101?115 (1933)