I visited Fire Island, Rockaway Beach, Long Beach and Coney Island during the seasons of 1883 and 1884. Found myriads of Cicindela hirticollis and dorsalis, Say. The beaches were fairly alive with these beetles. The hirticollis were most abundant in the latter part of June and early part of July, and dorsalis at the end of July and beginning of August. These beetles may be found throughout the length of these beaches. They have a singular habit of collecting in great numbers at certain points, where in spaces of about fifty feet square they are as numerous as flies about a stable. This was frequently observed, and so far as the general character of the beach and the surroundings were concerned there was nothing to favor the particular locality. My activity and success in taking these interesting hexapods at the seaside excited on many occasions the curiosity of some equally interesting bipeds, who, barefooted and wading through the surf, doubtless ridiculed my energy and thought me mad.