OF WASHINGTON. 137 



the basal segments more or less metallic, black or greenish, the terminal 

 segments more or less distinctly black punctate ; venter slightly cinere 

 ous. Legs black, with a very faint grayish shimmer in some lights ; 

 claws short, pulvilli small, whitish or testaceous. Wings nearly hyaline, 

 basal and costal portions deep tawny ; tegulae tawny, forward scale some 

 what lighter ; halteres tawny. 



Length of body, 4 to 4^ mm. ; of wing, 3^ to 4 mm. 



Two females from Mr. Charles Robertson, Carlinville, Ills. 

 This species is easily to be distinguished from punctigera by 

 the much less prominent epistoma and the rather short, not 

 club-like palpi. The femora also are scarcely enlarged. From 

 aldrichii it may be distinguished by its slightly larger size, by 

 the tawny tegulae, which are white in that species, and by the 

 palpi being largely tawny instead of wholly black. 



Hyaloinyia purpurascens n. sp. 



Male Face and front black, cinereous pollinose ; eyes rather widely 

 separated, brownish or reddish ; frontal vitta as a narrow line between 

 the eyes but widened towards the base of the antennae, black, with a 

 row of fine black hairs on each side ; antennae very small, black, third 

 joint cinereous ; proboscis blackish, palpi very small, tawny or testace 

 ous ; cheeks and occiput black, cinereous pollinose, the former below the 

 eyes with fine whitish hairs, the latter with short black bristly hairs ; 

 vertex with short bristles. Thorax black, shining, slightly cinereous on 

 the sides, with bristly hairs on the sides and bristles on the dorsum be 

 hind ; scutellum black, with four bristles. Abdomen metallic, very dark 

 green, usually with a decidedly purplish tinge on the second and third 

 segments, the fourth segment, and sometimes the sides of the others, 

 more or less ashy, black punctate ; venter black, more or less cinereous. 

 Legs black, the hind tibiae with a few black bristles, the femora slightly 

 enlarged ; claws long, pulvilli whitish. Wings hyaline or grayish, basal 

 portions tawny ; tegulae tawny or whitish ; halteres tawny. 



Female Differs from the male in the eyes being contiguous just in 

 front of the ocelli, the claws short, and the abdomen not purplish, more 

 broadly punctate. 



Length of body, 2^ to 3^ mm. ; of wing, 2 to 3 mm. 



Described from four males and four females, from Mr. 

 Charles Robertson, Carlinville, Ills. This is a much smaller 

 species than the three preceding. 



Trichopoda ciliata P A ab. Wiedemann's description of this 

 species makes it very evident that he was describing the 9 . 

 Brauer and von Bergenstamm (Vorarb. Mon. Muscaria Schiz., 

 147) indicate this to be the 9 of pcnnipcs. I believe this 

 synonymy to be correct. 



