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Wash., D.C. 20012). Ecology of arboviruses in a Maryland freshwater swamp. II. Blood feeding patterns of potential mosquito vectors. Am ] Epidemiol 96: 123-128, 1972.-Blood engorged mosquito specimens from the Pocomoke Cypress Swamp, Maryland, were collected from May through November, 1969. Five mosquito species (Aedes atlanticus, Aedes canadensis, Culex salinarius, Culiseta melanura and Psorophora ferox) were examined by capillary type precipitin tests of engorged material and by comparisons of human biting collections and collections of mosquitoes attracted to caged animals. A. atlanticus and P. ferox had similar feeding patterns, both most frequently feeding on sylvatic mammals, while C. salinarius appeared to feed mostly on domestic mammals adjacent to the swamp. A. canadensis was an omnivorus feeder, while C. melanura fed almost exclusively on birds. The potential of these mosquitoes as vectors of arboviruses known to be present in the swamp is discussed. arbovirus; disease vectors; ecology; encephalitis, equine; mosquitoes: viruses Same as Report (SAR) 18. NUMBER OF PAGES 6 19a. NAME OF RESPONSIBLE PERSON