240 



halteres yellow. Legs, including coxae, yellow, the mid and hind coxse 

 slightly reddish at bases. Wings clear, veins brown. Bristles on 

 mesonotum and scutellum, as well as the hairs on the abdomen, when 

 viewed from above and in front, yellow. 



Frons about one third the width of the head, the eyes slightly con- 

 cave a little above antennae, which causes the frons to have its widest 

 expanse at that point ; face wide, equal to about one fourth the head- 

 width at center, becoming very slightly wider at lower extremity, 

 and very distinctly wider at upper extremity ; antennae situated slightly 

 above middle of profile, shaped as in Figure 15, Plate XIII, the 

 pubescence on the third joint very distinct ; palpi rather broad, about 

 equal in breadth to the width of the face at mouth-margin ; postocular 

 cilia distinct, but not beardlike. Mesonotum with two rows of 

 acrostichals ; scutellum rounded in outline, the basal pair of bristles 

 weak. The hairs on hind margins of alxlominal segments rather 

 long; several weak hairs on apex of hypopygium. Legs slender; 

 (fore tibiae and tarsi missing in type specimen;) mid tibia with one 

 distinct bristle on the antero-dorsal surface at about the basal fourth ; 

 hind tibia with one bristle at basal fourth on antero-dorsal surface, 

 and 4-5 rather stronger ones lengthwise of the postero-dorsal surface ; 

 tarsi normal; all legs with short surface hairs. Cross vein at wing 

 middle ; veins 3-4 slightly divergent. 



Length, 2 mm. 



Female. — Similar in coloration to the male. Differs considerably 

 in the structure of the head. The face, below the antennae, is nearly 

 one third the width of head at same part, converging towards lower 

 extremity, where it is slightly over one half as wide as at upper 

 extremity; the antennae are much smaller (PI. XIII, Fig. 16) and 

 the arista is rather longer; the palpi are slightly more enlarged, and 

 the proboscis is more protruding. The legs are colored and bristled 

 as in the male. There is one very weak setula on fore tibia at about 

 the basal fourth. 



Locality, Champaign, Illinois, taken alongside of railroad June 

 22, 1888 (Marten and Hart). One male and eight females. 



ANTHOMYID^ 



FaNNIA LATIFRONS, U. sp. 



Male. — Black. Frontal stripe and orbits silvery white; facial 

 orbits and face with similar pilosity; antennae black, palpi and 

 proboscis concolorous. Mesonotum shining black, with faint brown- 

 ish pollinosity; scutellum and pleurae concolorous. Abdomen shining 



