AUT. 9 FLIES OF THE FAMILY SYRPHIDAE SHANNON 33 



Antennae black, the third joint smaller and the arista less stout (nor- 

 mal type) than in nigra. Face rather deeply concave, the epistoma 

 projecting a little bej^ond the antennal prominence; legs more brown- 

 ish than in nigra, the torsi more extensively j^ellowish; abdomen 

 entirely reddish yellow, not constricted basally, but progressively 

 narrowed toward the base; wings as in nigra. Length 11.5 mm.; 

 vring 9 mm. 



Type locality. — Santiago, Chile (1924, A. Faz). 



Type.—C2it. No. 28753,\t. S. N. M. 



