1 have for the past year been studying in detail the various habitats of Bergen County, North New Jersey. It has been my intent to develope a thorough list of the Odonata species residing in this highly urbanized County. During the winter months of 1990,1 discovered several localities in the remote Ramapo Mountains which seemed to possess ideal characteristics for T. thoreyi. The ideal habitats for this ancient species are sunny hillside seepages that are barely a trickle. In these seepages, the flat larv ae live among wet leaves.