Abstract
In 1962 Professor F. Stockmans, of the Institut Royal des Sciences Naturelles de Belgique, kindly sent me for study two insects from Upper Carboniferous deposits in Northern Spain. One of these (no. 94.837), from the Mine de Poleiro, is part of a cockroach tegmen, which cannot be placed with certainty even to family level. The other specimen (no. 97.587), from shales near the village of Magdalena, is a nearly cornplete, well-preserved wing of a megasecopterous insect. Since it shows interesting venational features and since there seems little chance of obtaining additional insects from this deposit in the near future, I have considered it advisable to publish a formal description of the fossil at this time. I am indebted to Dr. Stockmans not only for his courtesy in loaning me these specimens but for providing me with information about the geology and stratigraphy of the formation concerned.