Metarrhizium anisopliae (Metschnikoff) Sorokin
Natural hosts.—Blattidae, Seymour (1929); Charles (1941).
Panesthia australis, U.S.A., Massachusetts (Roth and Willis, unpublished data, 1957): Growing on adult specimens that were found dead in a laboratory colony. Determination by Miss Dorothy Fennell.
Periplaneta americana, England (Bunting, 1956): Growing on genitalia of females where it prevented oöthecal formation.
Cockroach, Puerto Rico (Johnston, 1915): From a "small roach" in the pathological collection at Rio Piedras (no data).
Family DEMATIACEAE
Memnoniella echinata (Rivolta) Galloway
Natural host.—Oötheca of Blattella germanica, U.S.A., Pennsylvania (Roth and Willis, unpublished data, 1952): On material that had oozed from a damaged oötheca. Determination by Miss Mary Downing.