The Geometridae is one of the most species-rich families of the Lepidoptera, both in our part of Europe and worldwide. According to the latest count, we have 412 species in Poland, many of which have not been seen for a very long time. Like most families of butterlies and moths, hhis one has not yet been the subject of a separate, modern monograph in Poland.

The present revidion of the Polish Ennominae is an extensive faunistic and anatomical/morphological study of the imaginal forms of this subfamily that covers both the global distribution as well as the local life histories and habitas of the species, wherever they are sufficiently well-known.

The faunistic part contains the available data on species raltively rarely come across, at the edges of their ranges or expaning their distributions in the form of a catalogue of information gleaned from the literature as well as from accessible museum collections and the larger private ones. Historical data and present-day habitats are shown on ditribution maps based on the UTM grid. The latest distribution data on the relatively more common speces are being accumulated in the computerized "Checklist - Lepidoptera of Poland" database and is listed according to province (vovodship). The reliability of historical records is critically analyse in the context both of voucher specimens in collections and of the profitability of such records, judged on the basis of known present-day localities of the species concerned. The anatomical-morphological part stresses diagnostic feautres at the species level. They are characterized in the descriptions and the illustrations in such a way as to facilitate comparison of similar species. There are illustrations in colour (18 plates) of all the species (including those known only from historical records); intraspecific variability is taken into account. The genitalia of both sexes of all but two species are illustrated. The recetn occurance in Poland of Agripis bajaria nad the present-day record of Lycia zonaria have been confirmed, but the Polish records of Selidosema plumaria and Odontlognophos dmetata have been rejected. The question of wheter are permanent populations of afew other species in Poland at present remains open.