Studies on Rickettsia-Like Micro-Organisms in Insects.

INTRODUCTION HisTORICAL REVIEW OF THE KNOWN RIcKETTSIAE MATERIALS AND TECHNIQUE Criteria for Distinguishing Rickettsiae from Cell Granules, etc. OBSERVATIONS ON VARIOUs RICKETTSIAE Rickettsia medophagi in the Sheep-Ked, Melophagus ovinus Rickettsia in the Mosquito, Culex pipiens Rickettsia in the Sand-Fly, Culicoides sanguisuga Rickettsiae in Tabanidae Rickettsia lectularia in the Bedbug, Cimex lectularius Rickettsiae in Siphonaptera Rickettsiae in Corrodentia Rickettsiae in Mallophaga Rickettsiae in Coleoptera. The Drug-Store Beetle, Sitodrepa panicea Rickettsia in the Argasid Tick, Ornithodorus moubata Intracellular Protozoa found in the Ixodid Tick, Dermacentor Other Bacterial Organisms of Insects DISCUSSION Relation of Rickettsiae to their Hosts Nature and Relationships of the Rickettsiae TABULAR SUMMARY OF RICKETTsIA-LIcE ORGANISMS REFERENCES CITE DESCRIPTON OF PLATES