1875.1 151 - [Osten Sacken. 



Front with black pile. Antennae black. Thorax with black pile; 

 pleura3 with a slight gray pollen; scutellum yellowish, with yellow 

 pile. Abdomen of an almost opaque black, with black pile on the 

 sides, yellow at the base; second, third and fourth segments with 

 interrupted yellow crossbands near the anterior margin, forming oval, 

 transverse spots, bearing yellow pile on the sides; those of the 

 second segment are oblique and smaller; fourth segment with a nar- 

 row yellow hind border; venter colored like the dorsum. Legs black, 

 anterior knees fulvous. Wings grayish ; stigma (cellule medias- 

 tiue?) yellowish. 



" Hab. Newfoundland. (Mr. Leguillon.) Type in the Mu- 

 seum." 



" This species represents in America the S. umbellatarum Fab., 

 Meig., which it resembles." 



There are two conflicting species, to which this description of 

 Macquart's may refer: one of these I take to be the true representa- 

 tive of S. umbellatarum of Europe ; I have unfortunately no Euro- 

 pean specimens for comparison and assume the identity provisionally, 

 upon comparison of Dr. Schiner's description ; the other is probably 

 Macquart's species. An objection, equally applicable to both spe- 

 cies is, that Marquart describes the pile on the scutellum as yellow, 

 while it is black ; he jmay have meant a fringe of yellowish hairs 

 which exists on the underside of the scutellum. 



Syvphus umbella'arum (? Syn. Schiner, Fauna Austr. I, p. 307). 



I will add a few details to complete Macquart's description, which 

 is applicable, in the main, to both species. 



Female. Eyes glabrous. Face yellow, with a whitish pollen al- 

 most concealing the ground color; in the middle, a brown stripe, 

 crossing the facial prominence, but abruptly stopping before the base 

 of the antennae ; this stripe does not run down on both sides along 

 the oral margin (it does so for a short distance in a very few speci- 

 mens); oral margin yellow, as well as the cheeks; front and vertex 

 bluish green, (not brownish green); the yellowish gray pollen on the 

 front forms a well-marked arch, sub-interrupted in the middle, leav- 

 ing bare on one side, the vertex, on the other, a well defined triangle 

 above the antennas; the sides of this arch run down along the eyes 

 and coalesce with the facial pollen; antennae inserted on brownish 

 yellow ground; thorax bluish green; scutellum dull yellow, brown 

 at the extreme ends on each side ; it seldom shows any trace of a 

 bluish metallic reflection; the four front legs are reddish yellow,, 



