14 THE CANADIAN ENTOMOLOGIST. 



ing the ocellar region, and back of head black, with grayish pol- 

 linosity ; antennae, palpi and proboscis yellow ; arista and head bristles 

 blackish, the former yellow at base. Thorax without pale mark- 

 ings, except below wing base, where it is obscurely yellowish. Legs 

 yellow, including the coxae. Wings clear, veins brown, fourth and 

 fifth less distinct than the others. Squamae yellow, fringe con- 

 colorous, margin brownish. Hal teres yellow, knobs whitish. 



Frons about one-half the head width, orbits poorly defined; 

 four pairs of orbital bristles present, which are of moderate 

 strength, the anterior two pairs incurved, the posterior two back- 

 wardly directed; frontal triangle not well defined; antennae of 

 moderate size, third joint disc-like, arista tapering, bare, very 

 short, its length barely exceeding the height of the third antennal 

 joint; cheek at posterior margin as high as eye, at anterior mar- 

 gin about one-half'as high, marginal hairs weak and pale, vibrissa 

 black and well differentiated, though not strong. Mesonotum 

 with four pairs of dorso-central bristles, which decrease slightly in 

 strength anteriorly, the anterior pair slightly in front of suture, 

 about five irregular rows of discal setulae between the anterior 

 dorso-centrals; the pair of bristles between the posterior dorso- 

 centrals of moderate length. Abdomen ovate, penultimate seg- 

 ment short, ovipositor rather short and broad; posterior margins 

 of all segments with distinct bristly hairs, which are most notice- 

 able on the last segments. Legs of moderate strength , their sur- 

 faces with short black hairs; mid tibia without posterior bristles. 

 Wings slender; costa indistinguishable from slightly beyond apex 

 of third vein; veins 3 and 4 gradually divergent on their apical 

 portions; fourth vein reaching wing margin at about same distance 

 behind apex of wing as third vein does before apex; auxiliary vein 

 indistinct; inner cross- vein distinctly beyond apex of first, and 

 near to apical third of discal cell; last section of fourth vein about 

 six times as long as penultimate section; last section of fifth vein 

 about four-fifths as long as penultimate section. 



Length 2 ,mm. 



Type locality. — Gleason Dune, Havana, 111., April 30, 1914 

 (Hart & Malloch). 



