312 ENTOMOLOGICAL NEWS. U'^^h'' '^4 



tween fore and midcoxae, a smaller one behind midcoxa, and post- 

 notum black; abdomen brownish black, subopaque; hypopygium glossy. 

 Legs, including coxae, entirely yellow. Wings clear, veins yellowish. 

 Halteres white. Frontal bristles and thoracic hairs yellow, the other 

 bristles brown. 



Frons with four pairs of long orbital bristles; face slightly buccate; 

 cheek one-third as high as eye (antennae in poor condition). Meso- 

 notum with two pairs of dorso-centrals, the posterior pair very widely 

 separated, the anterior pair weak ; discal setulae numerous on the 

 anterior half and rather long, becoming sparser on the posterior half. 

 Legs slender, no bristles present. Wing with costa to fourth vein; 

 veins 3 and 4 divergent; inner cross-vein at slightly before end of 

 vein I and at middle of discal cell; last section of fourth vein six 

 times as long as penultimate section; last section of fifth one and one- 

 half times as long as penultimate section. Length, 1.75 mm. 



Type. — Swept from catalpa, University grounds, Urbana, 

 Illinois, June 21, 1898. (Marten). In collection Illinois Statq 

 Lab. Nat. Hist. 



This species will run down to citreifrons Malloch in my 

 synoptic table in the paper previously referred to, but may be 

 readily separated from that species and its allies by its posses- 

 sion of only two pairs of dorso-central bristles. 



Agromyza youngi new species. 



Male. — Black, shining. Squamae and halteres black. Wings clear, 

 veins black. 



Frons very slightly over one-third the width of head, frontal triangle 

 shining, elongated, reaching over half-way to base of antennae and 

 very distinct; orbits very narrow, rather thickly covered with hairs, 

 which become much longer and stronger towards anterior margin, 

 where one or two are setulose, the normal orbital bristles hardly dis- 

 tinguishable in type, all incurved ; ocellar bristles widely separated at 

 base and lying subparallel ; frons in profile declivous ; face short ; 

 the anterior margin of cheeks much produced, as in females of the 

 vibrissata group; antennae small; arista bare, swollen at base, and very 

 short, being slightly shorter than the width of frons at above anten- 

 nae; cheeks narrow, about one-sixth the eye height; marginal bristles 

 moderately strong; vibrissa indistinguishable. 



Mesonotum with three pairs of dorso-centrals, the length of these 

 slightly decreasing anteriorly, discal hairs very numerous, closely 

 placed and not regularly arranged in rows ; the pair of bristles between 

 posterior dorso-centrals absent; pleurae and scutellum normal. 



Abdomen short, broad at base, tapering very much to apex, its out- 



