A GENERIC REVISION OF THE AMERICAN MOTHS OF THE SUBFAJSIILY IIYPENINAE, WITH DESCRIPTIONS OF NEW GENERA AND SPECIES. Bj William Schaus. INTRODUCTION. No attempt has ever been made to classify the Hypenmae of tropical America. As the North American species have been worked out by the late Prof. J. B. Smith in Bulletin 48 of the United States National Museum, I have not revised them and have merely referred to the type-species of each genus; the genera had to be included in this paper as many of them contained species from the Neotropical region, while others might be represented when the Mexican fauna becomes better known. So much confusion has existed in regard to this subfamily that it was necessary to identify and key the genera in such a way that students would be able to follow a given classifica-tion. It has been necessary to use certain secondary sexual characters in order to facilitate the recognition of genera and species, but the key itself does not always explain the great differences existing in appar-ently aUied genera. In some few cases the venation varies in the same genus, sometimes in the one sex, sometimes between the males and females. For the facility of identification 41 new genera are described and 150 new species. Reference is made to all the Neo-tropical species described as Ilypeninac or apparently referable to that subfamily. The bulk of the known species arc represented in the national collection, to wliich I have added colored drawings of all of Walker's species at the British Museum and Oxford, also of Sir George Hampson's and Warren's which are not in the collection. Of a few of Guenee's um:ecognized species I hope to add drawings later on. Altogether 164 genera and 776 species are referred to, not counting those which sink in the synonymy. Key to the genera. Without areole 1 With single areole 55 With double areole 127 Proceedings U. S. National Museum, Vol. 50— No. 2132. 259
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