By monitoring weekly for 3 months with Centers for Disease Control (CDC) light traps baitedwith carbon dioxide (CO') and liglrrt, 12 species of mosquitoes were collected from salt-marsh areas in TopsailIsland, North Carolina: Aedes vexans, Anopheles atropos, An. bradleyi, An. crucians, An. punctipennis, Culexpipiens, Cx. restuans, Cx. salinarius, Ochlerotatus sollicitans, Oc. taeniorhynchus, Oc. infirmatus, and (Jranotaeniasapphirina. TIte hourly activities of common salt-marsh mosquitoes, namely Oc. sollicitans, Oc. taeniorhynchus,An. atropos, An. bradleyi, and C.x. salinarius, were observed from 1700 to 0800 h by using a collectionbottle rotator trap baited with 1-octen-3-ol (octenol), COr, and light. The mosquitoes exhibited different peaksof adult activity, with a significantly greater number of mosquitoes collected from 0600 to 0800 h than from1700 to 1900 h.