4 PROCEEDINGS OF THE XATIOISrAl. MUSEUM. vol. 66. 



STEGANA FLAVIFRONS Matloch. 



Female. — Head yellow, ocellar region and palpi fuscous, sides of 

 labrum and third antennal segment brown. Thoracic dorsum brown, 

 paler along anterior margin and without distinct vittae; pleura pale 

 yellow, upper black vitta conspicuous, lower one absent or present 

 only on upper margin of sternopleura. Abdomen blackish brown, 

 sides of some of basal tergites yellowish. Legs pale yellow, fore 

 femora with a large apical blackish spot, fore tibiae with black 

 apices, basal segment of fore tarsi black or brown; mid and hind 

 femora nearly all blackish brown, bases of mid tibiae and middle of 

 hind pair broadly brown. Wings brown, paler along hind margin. 

 Halteres yellow. 



Eye higher than long; frons at anterior margin about half as 

 wide as its length; cheek linear; palpi broadened; antennpe extend- 

 ing to mouth. Scutellum almost rounded, apical bristles about two 

 thirds as long as basal pair. Fore metatarsus dilated. Wing as in 

 last species. 



Length, 2.5-3 mm. 



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



r^^^e.— Female, Cat. No. 26679, U.S.KM. 



STEGANA MAGNIFICA Hendel. 



This species, originally described from Peru, is not present in the 

 available material. The data presented in the key should enable 

 students to identify it. 



STEGANA PLANIFACIES Malloch. 



Female. — Frons glossy black, yellowish only on sides below pro- 

 clinate orbital bristle and at anterior lateral angle; middle of face 

 broadly black on entire width; palpi yellow; cheeks silvery white; 

 occiput blackish on upper half and with a black spot at level of 

 pleural vitta ; third antennal segment almost entirely black. Thorax 

 brownish black on disk, paler on anterior and lateral margins, but 

 not distinctly vittate; scutellum black, with a conspicuous white 

 central vitta, broadest posteriorly; upper pleural vitta complete. 

 Abdomen black, paler on sides at base. Legs pale yellow, apical 

 spot of fore femora faint ; mid and hind femora each with an oblique 

 fuscous streak on anterior side from near middle to near apex, that 

 on hind pair least distinct; mid and hind tibiae or at least the mid 

 pair with a basal fuscous band. Wings brown, almost hyaline along 

 hind border. Halteres obscurely yellow. 



Eye longer than high; frons wider than in last species, especially 

 at vertex ; cheek almo.st as high as width of third antennal segment ; 

 palpi broad ; antennae extending to mouth ; face not carinate above. 

 Scutellum very little pointed, apical bristles about two-thirds as 



