Family NEISSERIACEAE
* Neisseria meningitidis (Albrecht and Ghon) Holland
Experimental vectors.—Cockroaches, U.S.A. (Longfellow, 1913).
* Veillonella parvula (Veillon and Zuber) Prévot
Natural vectors.—Periplaneta americana, U.S.A. (Hatcher, 1939).
Family LACTOBACTERIACEAE
* Diplococcus pneumoniae Weichselbaum
Experimental vectors.—Blatta orientalis, Italy (Cao, 1898).
Cockroaches, U.S.A. (Longfellow, 1913).