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Report on Species of Anopheles in British Guiana

Mosquito-borne diseases have long been known to plague British Guiana. This became of great significance to the United States Army when a portion of this colony was leased by our government for the establishment of a base. In his initial health survey report Brig. General Leon A. Fox gave full weight to this problem. With this as a stimulus the authors became interested in determining which anophelines were present in the colony. Mosquito identifications were begun on November 15, 1941, in the laboratory of the Engineer Hospital.

Although a wide variety of conditions favorable for mosquito breeding exists in British Guiana, heretofore a relatively small number of species has been reported. During the past year the Malaria Control Unit² has kept a constant vigil. Dippers have been sent out daily, adult captures made periodically with the result that in the narrow confines of the Base possibly fourteen species of anophelines have been found, including one new species.

Received January 21, 1943.
² Major Charles O. Bruce supervised and coördinated the work in field and laboratory. Miss Tamarath D. Knigin and Mr. Stanley F. Yolles were in charge of the laboratory work and Mr. Austin E. Graham, Jr. was in charge of the field work.

¹ A unit of the Health Service, Caribbean Division, Corps of Engineers. The authors wish to thank the Chief Health Officer, Brig. General Leon A. Fox, M.C. who first realised the problems existing here and was directly responsible for our being sent to British Guiana. We gratefully acknowledge the help of Dr. R. C. Shannon of the Rockefeller Foundation who generously gave us advice whenever we were in doubt and confirmed most of our determinations.