158 THE CANADIAN ENTOMOLOGIST 



abdominal bands reach the margins in their full width. Squam?e not pilose above. 



Length, 11.5 mm. Female. Face yellowish; cheeks, oral margin and a 

 broad facial stripe, ending below the antenn?e, blackish. Front shining black, 

 with a metallic blue reflection, the sides opposite the antennae narrowly dusted 

 with yellowish pollen, expanding in the middle of the front, but leaving a broad 

 shining stripe. Pile of the front black, of the posterior orbits and cheekg, 

 whitish; of the eyes, whitish, sparse, not very conspicuous. Antennae reddish, 

 third joint above, and the arista, piceous. 



Thorax with a strong metallic bluish reflection, pleurae obscurely piceou§, 

 especially the sutures ; scutellum metallic blue, translucent ; pile of dorsum 

 yellowish, of the pleurae, longer, whitish, of the scutellum, longer, yellowish. 



Abdomen, sub-opaque, moderately shining, the first and apiqal segments 

 shining bluish black. Abdominal bands as" in Syrphus torvus, but slightly nar- 

 rower, deeply notched medially posteriorly, and extending over the margins in 

 their full width. Pile yellowish on the two basal segments and the yellow 

 bands, elsewhere, shorter, black. 



Legs yellow ; basal half of the front four and two-thirds of the hind 

 femora, black; a band beyond the middle of the hind tibiae and the apical joints 

 of the hind tarsi, piceous. , , ) 



Wings pellucid hyaline; stigma faintly yellowish. 



Holotype, female, (3riUia,. Ont., May 26, 1913 (C.urran), in the author's 

 collection. 



Syrphus ochrostomiis Z6tt.  



Antennae red ; differs from ribcsii, profritus. etc., in the squamae not being 

 hairy above ; from grossulariac in having red antennae and legs, and narrower 

 bands. Face yellow, with whitish pollen on the sides. Cheeks more reddish, 

 with a large black spot below the eyes and the border of the eyes black from this 

 spot to the posterior orbits. Thorax shining metallic greenish black, the pleurae 

 covered with whitish dust and almost white pile. Scutellum wholly yellow pilose. 

 The abdomen is more shining than opaque. First pair of spots reach the margin 

 in full width and the yellow extends forward along the margin, narrowly, to the 

 slightly yellowish sides of the first segment. The two following bands ai-e 

 moderately attenuated laterally, and sHghtly notched in the middle posteriorly. 

 The bands have a slight metallic greenish lustre, but are distinctly yellowish red. 



One specimen, Orillia, Ontario, 1914 (Curran). 



This species is very similar to S. uitidicoUis. but the latter lacks the black 

 orbital stripe below the eyes and the scutellum is black haired, except the base. 

 The specimen described above agrees very well with a var. of S. nitidicollis 

 mentioned by Verrall, but differs in the abdominal bands being attenuated laterally 

 and in having the black stripe below the eyes. It may be distinct from 

 ochrostomus. j 



Syrphiis nitidicollis Meigen. 



This species is moderately like the specimen I have described under 



S. ochrostomus. It is readily distinguished from other North American species 



by its red antennae and metallic greenish reddish cross-bands, which are 



scarcely notched medially and extend over the margins in their full widtlj. 



