14 INSECUTOR INSCm/E MENSTRUUS 



callus, widening to below insertion of antennae, the face beyond that 

 point nearly parallel-sided ; face shallowly depressed below base of anten- 

 nae, the lower two-thirds somewhat swollen and with a moderate median 

 cdlosity that does not extend to the somewhat produced oral margin. 

 Frons and face black ; frons with hair sunounding ocellar callus black, 

 below this with golden yellow pubescence, densest along orbits ; face 

 with scattered yellowish white hairs and with dirty whitish pruinosity, the 

 median callosity and an area to each side of it shining black. Antennae 

 piceous, geniculate, the first and second joints short, the third elongate, 

 broad, flattened, about twice as long as broad, rounded at apex ; arista 

 naked, pale ferruginous. Eyes with distinct whitish pubescence. 



Thorax dull black with traces of paler pruinosity medianly in front auid 

 at anterior angles ; a tuft of ferruginous hairs before insertion of wings. 

 Scutellum black. Pleurae black with groups of pale yellowish hairs. 



Abdomen depressed, tapered posteriorly, dull black above, the second 

 segment clothed with rather long and dense yellowish pubescence ; third 

 segment with long rather sparse yellow pubescence at sides anteriorly ; 

 fourth and fifth segments with yellowish pubescence along anterior margins. 



Femora and tibiae shining blackish, the knee-joints ferruginous, the 

 pubescence pale. Femora much thickened, but without distinct tooth ; 

 tibiae arcuate and somewhat compressed on the distal half. Tarsi fenu- 

 ginous, somewhat darkened distally. 



Wings infuscated, darkest along costa and along a fold in the submar- 

 ginal cell ; a fuscous spot at the upper end of the anterior crossvein. 

 Squamae broadly margined with black, the fringe fenuginous. Halteres 

 pale with ferruginous knobs. 



Length : Body about 9 mm., wing 9 mm. 



Chamchamayo, Peru (collection Rosenberg) ; one female. 



Type: Cat. No. 15503, U. S. Nat. Mus. 



Quichuana picadoi, new species. 



Female : Very similar to Quichuana s^lvicola ; wing venation, gen- 

 eral coloration, shape of frons and antennae as in that species. The face 

 more prominent and less excavated below antennae ; pubescence of frons 

 and face, with exception of black hairs on ocellar callosity, entirely pale. 

 Mesonotum and scutellum with dirty yellowish white pubescence. Pubes- 

 cence of abdomen arranged as in the preceding species, but much more 

 abundant and entirely dirty yellowish white. Femora black ; tibiae dull 



