164 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.59. 



front of anterior ocellus is a shining, triangularly-shaped depressed 

 area, below which is a narrow depressed area which is triangular 

 and nearer the clypeus on the median line; antennal furrows com- 

 plete, angular at about middle of frons; postocellar line subequal 

 with ocellocular line, but shorter than the ocelloccipital line; lateral 

 ocelli below the supraorbital line; antennae 12-jointed, longer than 

 head and thorax, first flagellar joint as long as second and third 

 combined, joints two to five diminishing in length, the remaining 

 subequal, with width and length subequal; stigma broadest near 

 base; third cubital slightly longer on radius but shorter on cubitus 

 than second; second recurrent received very near the apex of the 

 second cubital cell; thorax and abdomen shining, polished practi- 

 cally without hair. Black with a faint bluish tinge; sides of pre- 

 scutum, tegulae, pronotum, mesepisternum, mesosternum, most oi 

 mesepimeron, four anterior coxae, anterior trochanters and femora 

 rufous; underside of anterior tibiae f errugineous ; wings uniformly 

 deep brown with a faint bluish reflection; venation black. 



Type locality. — British Guiana. 



Described from one female collected in 1908 by J. Rodway. 



Type. — In the British Museum of Natural History, London. 



LOPHYROIDES MELANOPYGA (Konow). 



A single female collected by W. F. H. Rosenberg at Chauchamayo, 

 Peru, agrees perfectly with the original description. The antennae 

 are wanting beyond the seventh joint. 



LOPHYROIDES DORSUARIA (Konow). 



A single female from Santa Catharine, Brazil, received by the 

 British Museum from the Crowley bequest. 



LOPHYOREDES MODESTA, new species. 



Apparantly allied to melanoptera Perty but is smaller and the thorax 

 is entirely black. The dark wings will distinguish it from cordoviensis 

 Norton and the darker legs from pica Westwood and flavipes 

 Konow. 



Hale. — Length, 6 mm.; length of anterior wing, 6 mm.; length of 

 antenna, 2.5 mm. Labrum shorter than the clypeus, partly hidden 

 by long whitish hair; clypeus rather short, flat, truncate apically, the 

 surface with separate setigerous punctures; supraclypeal area very 

 gently convex; distance between the eyes at the clypeus distinctly 

 greater than the length of an eye; middle fovea obsolete; a narrow 

 furrow below anterior ocellus; antennal furrows complete; postocellar 

 furrow present, straight; postocellar area strongly convex, twice as 

 long as wide, parted medianly; postocellar line distinctly longer than 

 either the ocellocular or ocelloccipital line; antennae 16-jointed, the 

 third joint nearly as long as four plus five, with only a single apical 



