98 C. H. TYLER TOWNSEND. 



up, considerably constricted below; sides of face narrow, bare; 

 clieeks about one-fourth eye-hight, short, more or less bristly on 

 lower portions ; vibrissoe strong, inserted almost on oral margin. 

 Eyes bare, descending about five-sixths as low as oral margin. An- 

 tennae about as long as face, inserted high, second joint rather short, 

 third about five times as long as second, moderately wide, of equal 

 width, posterior apical corner rounded ; arista rather long, nearly 

 bare, thickened on basal two-fifths, 3-jointed, the second joint strongly 

 elongate, more than one-half as long as thickened portion of last 

 joint. Proboscis short, fleshy, shorter than hight of head, labella 

 well developed ; palpi rather slender, moderately thickened toward 

 tip. Thorax somewhat narrower than head ; scutellum with an 

 apical non-decussate pair of macrochtetse reaching middle of second 

 abdominal segment, and two long lateral pairs. Abdomen not wider 

 than thorax, rather long oval, somewhat vaulted, first segment hardly 

 shortened ; macrochsetse marginal, strong discal bristles often present. 

 Legs of moderate length, somewhat bristly, especially middle and 

 hind tibiae; claws and ])ulvilli short (9?)- Wings a little longer 

 than abdomen, with small costal spine, third vein bristly at base ; 

 apical cell terminating considerably before tip of wing, open ; fourth 

 vein bent-at an angle, with a short wrinkle at bend, apical cross-vein 

 strongly concave ; hind cross-vein more or less curved, in middle 

 between small cross-vein and bend of fourth. Type, D. harveyi n. sp. 



Dseochteta harveyi n. sp. 9 CO-— Eyes brown, frontal vitta blackish; 

 sides of front, face and cheeks silvery, in some lights dark; anterior pair of 

 ocellar bristles strongest, directed forward ; antennje and arista black, second 

 antennal joint only a little bristly; proboscis dark brown or blackish, palpi 

 blackish ; occiput blackish, clothed with gray hairs, and with fringe of black 

 hairs on orbital margins. Thorax black, silvery pollinose, leaving four black 

 vittse, which become obsolete at transverse suture; scutellum black, somewhat 

 silvery at apex. Abdomen shining black, bases of segments two to four rather 

 broadly silvery pollinose; first two segments with a lateral and a median mar- 

 ginal pair of macrochsetse, third segment with about ten marginal, anal segment 

 armed with macrochajtse and bristles, which are not very strong. Legs black, 

 femora and tibiae bristly; pul villi fuscous. Wings grayish hyaline, very slightly 

 pale tawny at base; tegulse watery white, borders slightly tawny; halteres 

 blackish. Length of body 5i mm. ; of wing 4.5 mm. 



Described from one specimen ; Orono, Me. (F. L. Harvey) 



EUMACROIVYCHIA n. gen. 

 Moderate sized to smaller, elongate species, silvery with black- 

 banded abdomen. Belongs in Tachininse. Head quadrilateral in 

 profile, the front sloping and longer than oral profile; front rather 



