538 PROCEEDINGS OF THE AA T/O.VAt MUSEUM. vol. 44. 



antennae dark colored; antennae: segment one dark, blackish, cov- 

 ered \s-ith a thick light-colored pubescence, second segment dark 

 brown, third segment conspicuously orange-red, remainder dark 

 brownish-black. Front (behind), vertex and occiput dull tawnj-- 

 yellow, darker behind and underneath on the gense; a conspicuous 

 brown line on the head, anteriorly enlarged into a conspicuous spoi 

 running back toward the collare. Front nearly as wide as the first 

 antennal segment is long. 



Thorax: pronotum dark brown; mesonotum, rich reddish-brown, 

 in front a narrow dark brown margin which continues back toward 

 the lateral margins of the sclerite; medially a narrow brown line 

 runs back for a short distance, but fades out at about one-tliird the 

 length of the sclerite; scutum bro-\vn, darker caudall}-. On the lat- 

 eral margins oi these two sclerites (scutum and prajscutum) is a large 

 buff spot, hemmed in above by a fuscous line. running cephalad from 

 the suture for one-third the length of the praescutum and then bent 

 strongh' laterad and recurved, to form a deep chocolate-brpAvn spot 

 occupj-ing the lateral margins of both sclerites. Scutcllum and 

 postnotum dusky brownish-black, paler at the sutures; metanotuui 

 brownish-black. Pleurae and sterna very dark brown, almost uni- 

 form except a darker black band which begins on the prosternum 

 and continues back across the epipleurae. Halteres 3-ellowish, a lit- 

 tle darker toward the loiob. Legs: coxae and trochanters brown, 

 slightly ])aler toward the tips (rest of legs gone, but probably wath 

 more or less dark color) . 



Wings light yellow with about eight brown spots along tiie ante- 

 rior margin of the wing, of which the second is located on the cros-s- 

 vein 7i; fourth and sixth larger, at base of Rs and tip of Sc; irregular 

 light brown bands lead from these spots across the wang, each spot 

 and band being separated from the ground-color of the wing by a 

 subh3-aline margin. First anal cell with three subequal brown marks 

 at its tip, second anal cell %vith about five at its tip. (Venation as 

 in fig. 33.) 



Abdomen: tergum dark brown, apices of segments more or less 

 paler; sterna paler, more yellowish-browoi, especially on the caudal 

 margins of the segments; h}-])opygium light yellowish-brown be- 

 neath. 



A second specimen has the rostrum reddish-brown; the third 

 antennal segment still more conspicuous, orange; the lateral marks 

 on the mesothoracic praescutum and scutum much paler brown; 

 pleurae paler brown. 



Two specimens (males) from Chapada. Matto Grosso, Brazil 

 (Coll. II. II. Smith). 



In American iluseum ol Natural History. 



