Vol. Xxix] ENTOMOLOGICAL NEWS 3OI 



with the usual fourteen bristles; three strong bristles below the eye 

 on each side; paloi yellow, sparsely black-haired beneath, terminally 

 with three upwardly directed and two downwardly directed bristles; 

 antennae very finely pale pubescent, dark smoky brown above, below 

 slightly paler, more yellowish; arista plumose, black or nearly black; 

 proboscis (in dried examples) reddish-amber, not projecting beyond 

 or below the palpi ; oral margin shining brown ; no conspicuous 

 ocellar elevations or sutures; eyes finely pubescent. 



Dorsum of thorax dark brownish-black, subshining and thickly set 

 with short stiff backwardly directed black hairs; a strong upwardly 

 directed bristle below the anterior spiracle ; a supraalar row of four 

 bristles, the first and last the stronger; four prescutellar bristles, 

 the inner (dorsocentral) pair usually the weaker; scutellum naked, 

 opaque, black, with two strong marginal bristles and a barely distin- 

 guishable outer pair; halteres pale dull yellowish-brown. 



Legs, with their coxae and most of the pleurae, yellow ; fore 

 tibiae always with four, often with five, and sometimes with six 

 rather weak setae spaced along the outside ; middle tibiae spurred, and 

 with a pair of strong setae below the knee, one comparatively weak 

 subapical seta, and on the apical half a series of oblique rows of 

 short, even, appressed hairs, from which area also spring stronger hairs ; 

 hind tibiae spurred but without other setae, though the hairs are longer 

 and stronger along the outer edge; metatarsi of all legs with rows of 

 short even hairs on the inside, this structure best marked on the 

 posterior metatarsi, each of which bears about twelve such rows ; 

 pulvilli present but weak. 



Wings almost hyaline ; veins dark brown, the heavy veins nearly 

 black; base of wing bristly and with three long plumose bristles on 

 lower edge; bristles edging the costa stiff, and as long as the width 

 of the thickened costal vein, which extends slightly beyond the 

 middle of the wing; a single short bristle at the origin of the heavy 

 portion of the third vein, which is distinctly forked; first longi- 

 tudinal vein reaches the costa about three-fourths the distance from 

 the humeral vein to the end of the thickened costa; mediastinal vein 

 faintly marked ; fourth vein up-curved, reaching margin about equally 

 distant from tip of wing as the fifth ; seventh vein weak, but readily 

 distinguishable. 



Dorsum of abdomen principally velvety black ; the basal segment 

 yellow, more or less black-margined posteriorly ; the next segment 

 anteriorly yellow, posteriorly black, with an angular backward projec- 

 tion of the yellow area on the median line; the three succeeding 

 segments black, each with a small yellow triangular marking on the 

 anterior edge medially ; sixth segment broadly yellow anteriorly, pos- 

 teriorly black; abdomen beneath, pale; hypopygium in fresh examples 

 usually extruded, sometimes folded back beneath the abdomen ; the 



