30 PROCEEDINGS OF THE NATIONAL MUSEUM vol.70 



BACCHA CONOPIDA Philippi 



Buccha conopida Philippi, Verb. Zool.-bot. Ges. Wien, vol. 15, 1865, p. 750. 



A species easily recognized by the brownish front and face bor- 

 dered by a narrow yellow margin ; the abbreviated yellow stripes at 

 the anterior corners of the mesonotum ; the yellow scutellum and the 

 hyaline wings with a brown spot at the middle of the anterior 

 margin. 



Three males, one female. 



Chile (E. C. Reed) ; Southern Chile (M. J. Rivera) ; Santiago, 

 Chile (A. Faz) ; Valparaiso (A. Faz). 



BACCHA FILIOLA, new species 



Male. — Agrees with Philippi's description of valdiviana, except 

 that this species is said to have the wing hyaline with three spots, 

 while the present species has the wings entirely smoky and no spots. 

 Frons black aeneous, very narrow; frontal triangle black aeneous, 

 rugose; frontal lunule yellow with a central black spot above an- 

 tennae ; antennae small, brownish ; face very narrow, the sides gently 

 converging downward ; lower eye margin bordering onto oral margin ; 

 thorax entirely dark aeneous, a pair of faint longitudinal pollinose 

 stripes on mesonotum ; pleurae with a faint reddish yellow tinge ; 

 legs yellowish brown, hind legs darker; abdomen extremely narrow 

 at second and third tergites; tergites two and three each with two 

 pairs of yellowish spots, the fourth with one pair; wings entirely 

 smoky, unusually small, the discal crossvein nearly at middle of 

 discal cell ; alula and basal portion of axillary cell vestigial. Length 

 9 mm.; wing 5.5 mm. 



Two males. 



Type locality. — Valparaiso, Chile (A. Faz) ; also from Santiago, 

 Chile (A. Faz). 



Type.— Cat. No. 28751, U.S.N.M. 



BACCHA FELIX, new species 



The vestigial alula as well as the basal portion of the axillary cell 

 allies this species to flliola. They are easily differentiated, felix is 

 much larger, the antennae larger and more yellow ; the face broadly 

 yellow on the sides and below ; the lower eye margin well separated 

 from the oral margin ; humeral and notopleura yellow ; hind margin 

 of scutellum yellow; pleurae largely yellow; fore and mid legs yel- 

 lowish brown; hind legs dark brown; abdomen dark aeneous, side 

 margins of first tergite and the anterior two-thirds of the second 

 yellow; anterior corners of the third and fourth tergites yellow; 



