254 BULLETIN 31, UNITED STATES NATIONAL MUSEUM. 



each with two yellowish white cross-bauds; on the second segment, the 

 first is broad, nearly entire, the second narrow, sometimes confined to 

 the sides of the hind border; third segment with both entire, the hind 

 one the narrower; fourth and iifth segments similar, both of nearly 

 equal width and connected in the middle ; hypopygium pitchy. Front 

 legs black, the knees luteous, sometimes the outer part of femora also ; 

 middle and hind femora usually blackish, except the ends, sometimes 

 only brownish on the base; middle and hind tibiaj and tarsi reddish 

 yellow, the last joint of tarsi darker. Wings brownish in front, hyaline 

 behind. 



Ten specimens, Dr. Dimmock (July 25, White Mountains), E. Burgess, 

 Professor Eiley (Veta Pass, Oolo.). 



MILESIA. 



Milesia Latreille, Hist. Nat. Crust. Ins., xiv, 3G1 (1804), Fabricius. 

 Sjihixea Eoudaiii, Dipt. Ital. Prodr., ii, 18r>. 



Very large, robust, nearly naked species, black or yellowish brown, 

 with yellow thoracic and abdominal markings. Head hemispherical, 

 broader than thorax. Autennje not long, porrect, inserted on a pro- 

 jection of the front, third joint rounded ; arista bare. Face concave 

 in profile, shorter than the front, moderately projecting below. Eyes 

 bare, contiguous in the male. Thorax large and robust, with yel- 

 low markings; scutellum in large part yellow. Abdomen more than 

 twice as long as thorax, only a little broader in the middle, flattened, 

 with yellow bands. Legs strong, hind femora elongate, below near outer 

 end with a tooth-like projection. Wings comparatively narrow, marginal 

 cell closed, third vein somewhat bent into first posterior cell ; anterior 

 cross-vein beyond the middle of the discal cell, very oblique, the sixth 

 vein beyond the anal cell bent S-like. Type, 3L crabroniformis Fab., 

 Europe. 



The genus Milesia, as employed by Latreille, included a large number 

 of heterogeneous forms. St. Fargeau and Serville, in 1825, restricted 

 the genus to include only our present species of Milesia and Spilomiiia, 

 in the sense here used ; for the species with unarmed femora iind open 

 marginal cell they ])roposed the name Temnostoma. In 1803, a year 

 before the origin of Milesia, Me\gei\ had proposed Sjnlomyia, bused uitou 

 species with armed hind femora and open marginal cell. In 1838, 

 however, he rejected both Spilomyia and Temnostoma^ and included all 

 their species, together with the species with closed marginal cell and 

 toothed femora, under Milesia. 



Later, Rondani, overlooking the name ])roposed by Meigen, based 

 Milesia upon the very species to which SpUomyia had been previously 

 given, and the species with the closed marginal cell he calh d SpMxea, 

 while for the species previously separated by St. Fargeau and Serville 

 as Temnostoma he gave the name Calliprobola. It may be a question 



