26 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 70 



on each side of the face is an inflated area, or bulla; mesonotum dark 

 aeneous, the notoplural calli, the post alar calli and scutellum yellow- 

 ish; legs, including bases of femora, yellowish brown, the tarsi 

 darker; anterior corners of first tergite yellow; second, third, fourth, 

 and fifth tergites each with a pair of conspicuous, large reddish yel- 

 low spots, not confluent with the lateral abdominal margins; sides of 

 sixth tergite yellowish; dorsal addominal pile mostly black; venter 

 yellowish with mostly pale pile; wings slightly infuscated. Length 

 11.5 mm. ; wing 9.5 mm. 



Seven females. 



Tyye locality.— QhilQ (1922, A. Faz). 



Type.— Cat. 1^0. 28746, U.S.N.M. 



Two specimens, labeled Chile, 1922, A. Faz, were determined as 

 Syrphus decermnaeulata Rondani (Aldrich) ; two having puparia 

 mounted on the same pins and labeled Southern Chile, on Lohello. 

 constitucim M. J. Rivera, were determined as Syrjyhus sexmaculafa 

 Macquart (Coquillett) ; two labeled Chile, E. C. Reed, also deter- 

 mined as sexinaculata (Reed) ; and one, labeled Chile, E. C. Reed. 

 was determined as Syrphus gciyi Blanchard (Reed). 



The descriptions of these three species above mentioned all ditl'er 

 to some extent from the specimens before me and until the types 

 have been examined, the best course to follow is to consider the 

 present specimens as a new species and give it a definite name. Espe- 

 cially should this be the case as the following species is a very close 

 ally to the present one. 



FAZIA AUSTRALIS, new species 



Male and female. — DiflFers from hullaephora. in being somewhat 

 smaller ; the front of the female proportionately broader, being wider 

 at the vertex than the width between the outside margins of the 

 antennal pits; and more extensively yellow, no yellow mark above 

 antennae; antennae smaller, the basal joints and arista reddish yel- 

 low, third joint brownish; face without a bulla on each side, dis- 

 tinctly more protruding, the lower margin of the head of greater 

 length than the height (shorter in hullaephora) ; sides of mesonotum 

 almost continuously j^ellow; scutellum yellow; legs yellowish, the 

 tarsi darker; number and arrangement of the abdominal spots simi- 

 lar but spots somewhat larger; the abdomen more narrow. Length 

 10 mm. ; wing 8.5 mm. 



Type locality.— Chile (E. C. Reed). 



Type.— Cat. No. 28747, U.S.N.M. 



One male, type; one female, allotype. 



These specimens were determined by Reed as Syrphus dmilis 

 Blanchard. S. similis is far more likely to be allied to the species 

 described below as Syrphus reedi than to ausfralis. 



