PROC. ENT. SOC. WASH., VOL. 20, XO. 1, JAX., 1918 21 Pseudomyothyria ancilla \Valker Tachina ancilla, Dipt. Saund., 299, is certainly this genus. P. indecisa Towns., described from Illinois, is probably only a subspecies of ancilla. P. perplexa Towns., measuring 3.5 mm., described from Peru, is nearly as small a species as ancilla, which measures 2.5 mm. This is not Frontinu nn cilia Coq., for which see the following. Frontiniella pararcilla Gen. et sp. nov. New name for Frontina ancilla Coq., 1897, Rev. Tach., 106 (nee Walker, Dipt. Saund., 299). Holotype, No. 21593 U. S. N. M. Measures 4.5 to 5 mm. in length. Twenty specimens, both sexes, reared by Mr. H. G. Ingerson, Benton Harbor, Michigan, June and July, 1916; transmitted through Mr. W. R. Walton. Differs from Frontina as follows: 'Second antennal joint shorter in proportion to third joint. No discal macrochaetae on abdominal segments. Frontalia much narrower. Facialia not ciliate over about one-half way. Arista not so long, thickened on basal half only. Male front narrower. No median marginal macrochaetae on first abdominal segment. No decussate apical scutellar bristles in either sex. The great disparity in size caused me to doubt Coquillett's determina-tion of this species as ancilla Walker. Comparison of specimens of this and the preceding disclosed the fact that Walker's description fits Pseudo-myothyria closely in structural details, such as length and thickening of arista, apical, crossvein not bent in, fourth vein very obtuse at bend, third antennal joint linear and slender, etc., in all of which it disagrees with the present form, FrontinicUn. A NEW GENUS OF LEPIDOPTERA ALLIED TO LEUCOPTERA HUBNER. BY CARL HEINRICH, Specialist in Forest Lepidoptera, U. S. Bureau of Entomology. Paraleucoptera gen. nov. Ti/pe: Cemiostoma albella Chambers. In 1902 (Jn. N. Y. Ent. Soc., Vol. X, pp. 98-99) Busck erected the genus Proleucoptera with smilaciella Busck as the type. He included in his new genus (Cemiostoma) albella Chambers calling attention, however, to its more advanced neuration. In the
BioStor
