6 PROCEEDINGS OF THE XATIOXAL MUSErM." vol.66. 



head otherwise as in last species. Apical sciitellar bristles about half 

 as long as basal pair. Inner cross vein at or a little in front of 

 middle of discal cell, and at about its own length from apex of fifth 

 vein; last section of fourth vein noticeably curved. 



Length, 3-4 mm. 



Type, male, allotype, and five paratypes. Higuito. San Mateo, 

 Costa Rica (P. Schild). 



Ty/^e.— Male, Cat. No. 26674, U.S.N.M. 



Named in honor of the collector. 



STEGANA UNIFORMIS Malloch. 



Male and female. — Head pale yellow ; f rons with a large black 

 mark on ocellar region which extends to middle of frons but not to 

 lateral margins, and the anterior third glossy black: face Avith a 

 broad transverse black band below bases of antennae; occiput fus- 

 cous on upper half, and with a black spot in line with the pleural 

 vitta; cheek silvery white: third antennal segment black except at 

 base: palpi and labrum yellow. Dorsum of thorax with three broad 

 biack vittae on a yellow ground, the median one 'nroadened pos- 

 teriorly; scutellum blackish brown: pleura with a complete black 

 vitta above. Abdomen black. Legs yellow, fore femora with an api- 

 cal black spot on anterior side, mid and hind femora with apices 

 black, mid pair most conspicuously so: tibiae of same legs brown at 

 bases. Wings brown, paler along hind margin. Halteres yelloAv. 



Llead as in schilclf\ frons about half as wide at anterior margin as 

 its median length; face not two thirds as high as back of head; 

 antennae extending to mouth: cheek as high as width of third an- 

 tennal segment. Both humeral bristles long; apical scutellar bristles 

 about two-thirds as long as basal pair, inner cross vein at about 

 one-third from base of discal cell ; last section of fourth vein parallel 

 to third on its basal half, then curved forward towards third: outer 

 cross vein at about its own length from apex of fifth. 



Length, 4-4.5 mm. 



Type, Higuito, San Mateo, Costa Rica (P. Schild). Paratype, 

 Erwin Island, Panama Canal Zone, July 18, 1923 (R. C. Shannon). 



7V;^e.— Female, Cat. No. 26675, U.S.N.M. 



STEGANA COLEOPTRATA Scopoli. 



The humeral angles each have one bristle. <iccurs in North 

 America and Europe. 



STEGANA (ORTKOSTEGA.NA) ACUTANGULA Her.d?!. 



This species was used as the genotype of Orthostegana by Hendel. 

 As in the preceding five species the humeral bristle is duplicated, 

 but the head is more like that of curvipeimis, the eye being much 

 higher than long. The microscopic erect hairs on the interfroiitalia 



