PERIMYLOPIDAE St. George, 1939 Hydromedion anomocerum Fairmaire, 1885 Hydromedion elongatum Waterhouse, 1875 Hydromedion magellanicum (Fairmaire, 1884) Hydromedion oblongiusculum (Blanchard, 1853) Hydromedion variegatus Waterhouse, 1875 Hydromedion sp. 1 Chanopterus paradoxus Boheman, Parahelops darwini Waterhouse 1875 Parahelops pubescens Waterhouse 1875 Parahelops angulicollis Fairmaire 1885 Parahelops kuscheli Kulzer 1963 Parahelops sp. 1 Bibliografía Blackwelder, R.E., 1944. Checklist of the coleopterous insects of México, Central America, The West Indies, and South America. U.S. National Museum Bull., Elgueta y Arriagada 1989; Lawrence, J. F. and A. F. Newton, Jr. 1995. Families and subfamilies of Coleoptera (with selected genera, notes, references and data on family-group names). pp. 779-1006 in: J. Pakaluk and S.A. Slipinski (eds.): Biology, Phylogeny, and Classification of Coleoptera: Papers Celebrating the 80th Birthday of Roy A. Crowson. Museum i Instytut Zoologii PAN, Warszawa. Vidal 1999; Peña, L. 1966;