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 



