AKT. 7 AMERICAlSr MUSCOID FLIES IN VIElSriSrA MUSEUM ALDRICH 31 



Sternopleural, 2, 1, the lower anterior small; pteropleura with 

 dense tuft and one small bristle; hypopleural, 8. Can not see under 

 calypter, which is brown but not so dark as scutellum and abdomen. 



Abdomen uniformly brown, subshining, first segment with row of 

 small spines along middle of hind edge, hardly noticeable ; second 

 segment with about a dozen small erect blunt spines along the middle 

 region and four larger on hind edge (2 pairs) a wide space between 

 these and the lateral one; third segment with a few very irregular 

 discal erect spines, longer than those on second and confined to 

 posterior half of segment ; hind edge with row of stout, blunt spines 

 about as long as the segment. The hair of the segment is more dense 

 and erect at each side behind middle but does not form a matted 

 patch below, though it is dense there; fourth segment with erect 

 bristles all over, those on disk more spiny, at apex with only small 

 bristles; genital segments brown. 



Prosternum with soft dark hair, a deep depression in its middle. 



Legs black, pulvilli yellowish-brown, rather long on all tarsi; 

 middle tibia with row of about four long bristles on outer front 

 side; hind tibia with characteristic large row of flattened hairs 

 fringing outer hind side. 



Wings brownish, especially at base ; epaulet and subepaulet brown ; 

 third vein with 2-3 hairs. 



Length, 14 mm. 



The species is represented in the National Museum by a series of 

 specimens, collected in Panama, Guatemala, and northward to 

 Massachusetts. 



108. SPALLANZANIA AMERICANA Schiner 



Cnephalia americana Schinee, Novara Reise, 1868, p. 327. 



One female " Novara R. Chili," the undoubted type of Schiner, 

 agreeing with the description and having the abdomen damaged in 

 the same way. This is a true Spallama/nia. It is well described by 

 Schiner and I add only a few items. 



The vertex is 0.41 of the head width, the eyes diverging only a 

 little and slightly converging again at the lowest part. The ocellar 

 bristles are broken off but without much doubt they were reclinate. 

 The bristk's of the front are also mostly broken off, but the scars 

 show two or throe rows, the outer quite irregular; the parafacial has 

 a row of about five rather strong bristles nearly in the middle, the 

 space between them and the orbit bearing coarse hairs, but between 

 them and tlic facial ridges the surface is bare. The pollen of the 

 head is silvery when viewed from in front, with irregular blackish 

 pollen along the orbits above; when viewed from above, however, 

 the parafrontals appear black almost to the level of the antennae. 



