Two species of Acantopcephala of the genus <i>gigantorhynchus</i> (<i>G. echinodiscus, G. Lutzi</i>) are considered with relation to the proposed new species, <i>Gigantorhynchus orticei</i>, found in the intestine of <i>Metachirus nudicaudatus</i> from Peru, South America. The specific name is dedicated to the late Javier Ortiz de la Puente, chief ornithologist of the Museum of San Marcos University, Lima, Peru. / Master of Science