NEW NEOTROPICAL MUSCOID FLIES. By Charles H. T. Townsend, Custodian of Muscoid Diptera, United States National Museum. The writer's publications on the Neotropical muscoid fauna date back a quarter of a century. Previous to 1909 his most important papers on this subject were three in number.^ Since that time, dur-ing nearly five year's residence in Peru, he made considerable mus-coid collections, which have been deposited in the United States National Museum. The study of these and some other neotropical material has resulted so far in the publication of nme principal papers.^ The present paper is in continuation of the publication of the results of identifying the Peruvian collections, with the inclusion of a few other neotropical forms. It will be noted that certain changes in family names are here inau-gurated. These have been made in conformity to the priority prin-ciple, the family taking its name from the earHest genus belonging thereto. Family CALIRRHOIDAE. PARAMYOCERA, new genus. Genotype. — Paramyocera discalis, new species. Intermediate between Myocera and Scotiptera, differing from former chiefly in possessing discal abdominal macrochaetae, and from latter in profile of occiput being vertical and not sloped forward inferiorly. 1 Catalogue of the described South American species of calyptrate Muscidae, Ann. New York Acad. Sci., vol. 7, 1892, pp. 1-44. On a collection of Diptera from the lowlands of the Rio Nautla in the State of Vera Cruz, Aim. Mag. Nat. Hist., ser. 6, vol. 19, 1897, pp. 16-34; vol. 20, 1897, pp. 19-33, 272-291. The taxonomy of the Muscoidean flies including descriptions of new genera and species. Smiths. Misc. Colls., vol. 51, 1908, No. 1803, pp. 1-138. * Descriptions of new genera and species of muscoid flies from the Andean and Pacific coast regions of South America, Proc. U. S. Nat. Mus., vol. 43, 1912, pp. 301-367. On the tribe Dejeaniini of the muscoid family Hystriciidae with five new genera. Psyche, vol. 20, 1913, pp. 102-106. New muscoid flies mainly Hystriciidae and Pyrrhosunae from the Andean montanya, Insec. Inscit. Menstr., 78 pp. in ten parts: 1, pp. 144-148, vol. 1, 1913; 2, pp. 10-16; 3, pp. 29-32; 4, pp. 42-48; 5, pp. 81-96; 6, pp. 123-128; 7, pp. 133-144; 8, pp. 153-160; 9, pp. 169-176; 10, pp. 183-187, vol. 2, 1914. New Masiceratidae and Dexiidae from South America, Journ. New York Ent. Soc, vol. 23, 1915, pp. 61-68. An acalyptrate genus of Muscoidea— A polistiform genus of muscoid flies— A genus of hystriciine flies with white maggots, Insec. Inscit. Menstr., vol. 3, 1915, pp. 41, 43-46. New Andean spaUanzaniine flies— New Peruvian hystriciine flies, Insec. Inscit. Menstr., vol. 3, 1915, pp. 63-76. Proceedings U. S. National Museum, Vol. 49— No. 2115. 405
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