.NO. 2128. NEW OENERA OF MUSCOID FLIES— TOWNSEND. 619 



abdomeu is oval, and liypopygial hook of male is short, while front is 

 scarcely flattened. 



Miltogramma decisa Townsend ^ represents subgenus B of this 

 genus, the abdomen of male being slightly swollen. Miltogramma 

 naTUi' Wulp, from Guerrero, Mexico, probably does not belong to this 

 genus. 



PARAMETOPIA, new genus. 



Genotype. — Parametopia morrisoni Townsend, new species, for 

 Metopia leucocepTiala Coquillett, Rev. Tach., 1897, p. 127, part (not 

 Musca leucocepMIa Rossi, Fauna Etr., vol. 2, 1790, p. 306), holotype 

 being specimen from Wliite Hountains, New Hampshire (Morrison), 

 labeled by Coquillett Metopia lateralis Macquart (not Degeeria lateralis 

 Macquart, Dipt. Exot. Suppl., vol. 3, 1847, p. 208). Named in honor 

 of H. K. Morrison. Holotype, No. 19152, U.S.N.M., female. 



Both sexes with parafrontals and frontalia much as in female of 

 Metopia, with other characters in general of Metopia. No median 

 macrochaetae on first abdominal segment in either sex. A median 

 marginal pair on second and third segments, the third segment with- 

 out contmuous marginal row. Differs from Anicia Robineau Des- 

 voidy (1863) by lacking the marginal row of third segment and the 

 median marginal pair of first segment in both sexes. 



NASONIMYIA, new genus. 



Genotype. — Heteropterina nasoni CoqmU.ett,^nt. News, vol. 6, 1895, 

 p. 207. 



Diffei*s from Heteropterina as follows: Cheeks not over one-fifth 

 eye-height. Vibrissae strong, decussate, not long, inserted nearly on 

 oral margin. Parafacials narrow, nearly equilateral, not bulged in 

 profile, hair-rows vestigial or absent. Third antennal joint hardly 

 twice as long as second. Arista well thickened on basal fourth or 

 more. Costal spine pronounced. Male with two pairs of procHnate 

 fronto-orbitals. Hypopygium of male hookhke. 



The genus is named in honor of Dr. W. A. Nason. 



Family SALMACIIDAE. 

 PATELLOA, new genus. 



Genotype. — P^orocera Zewcanme Coquillett, Rev. Tach., 1897, p. 104. 



AlHed to Phorocera and CtenopJiorocera. Description is of female 

 only. Eyes thickly hairy. Facialia strongly cihate to lowest frontals. 

 Vibrissae inserted on level with middle of the cut-off oral margin. 

 Face receding, length of head at vibrissae only a httle over half that 

 at antennae. Aiista thickened on less than basal third, first two 

 joints short. Front anteriorly about one and one-tliird times eye- 



i Ent. News, vol. 3, 1892, p. 81. 



