NORTH AMERICAN TWO-WINGED FLIES OF THE GENUS SPATHIMEIGENIA, WITH DESCRIPTIONS OF FIVE NEW SPECIES By J. M. Aldrich Associate Curator, Division of Insects, United States National Museum The present paper contains a discussion of the generic characters of the tachinid genus Sj^athimeigenia^ keys for separating the species in both sexes, and descriptions of five new species, with notes on the six heretofore known. I am under obligations to the authorities of the American Museum of Natural History and of the Massachusetts Agricultural College for the privilege of examining types of species not found in the United States National Museum ; to Dr. Alf ons Dampf , of the Oficina Federal para la Defensa Agricola, Mexico City, Mexico, for permis-sion to retain for the National Museum a series of specimens of the new species S. mexicana; and to William Middleton, of the United States Bureau of Entomology, for revising the nomenclature of the sawflies involved. Genus SPATHIMEIGENIA Townsend Spathimeigenia Townsend, Proc. Biol. Soc. "Washington, vol. 28, p. 19, 1915. — CuTvBAN, Can. Ent., vol. 62, p. 246, 1930. Hylotomomyia Townsend, Insecutor Inscitiae Menstruus, vol. 4, p. 31, 1916. Townsend established the genus Spathmieigenia in 1915 by assign-ing as type the species which Coquillett had erroneously identified as Tachina demylus Walker {Admontia demylus Walker of Coquil-lett ^). Believing that Coquillett 's species was not the true demylus^ Townsend named it spinigera, designating one of the Coquillett specimens as type. On examining the type of Tachina demylus in the British Museum, I found it to be a Cryptomeigenia^ leaving the name spinigera valid for Coquillett's species. Townsend gave no description of the genus and species. 1 Revision of the Tachinid.ae of America north of Mexico, U. S. Dept. Agr., Div. Ent., Tech. Ser. No. 7, p. 54, 1897. No. 291 1.— Proceedings U. S. National Museum, Vol. 80, Art. 1 1. 70407—31 1
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