1916] Johnson — Some New England Syrphidoe 77 



fourth segment with only a wide dorsal triangle, the lateral ex- 

 tensions being either very narrow, obsolete, or wanting, the fourth 

 and fifth segments shiny, with the margins strongly tinged with 

 reddish brown, all of the segments having a very narrow lateral 

 margin of yellow, genitalia reddish, venter yellow, legs yellow, coxae 

 livid or slightly marked with brown, front and middle femora with 

 a small spot above near the base and tarsi brown, posterior femora 

 with a subapical and the tibise with an apical band of black, with 

 the entire tarsi also black. Halteres yellow. Wings hyaline 

 slightly tinged with brown, stigma yellow. Length, 7.5 mm. 



9 . Front yellow, with a wide black stripe about one third its 

 width extending from the black of the vertex to the base of the 

 antennae, face and thorax as in the male. Abdomen bluish black, 

 shiny, the broad, even bands of the second, third and fourth seg- 

 ments narrowly margined with opaque black, fifth with lateral 

 spots and the narrow posterior margins of both the fourth and 

 fifth segments yellow. Legs including the coxae pale yellow, the 

 tip of the posterior tibiae and all of the tarsi blackish. Length, 

 7 mm. 



Fourteen specimens. Holotype, Princeton, Me., July 12, 1909. 

 Allotype, Shackford Head, near Eastport, Me., July 16. Eight 

 paratypes, Princeton, Eastport, Machias (July 19), and Capens, 

 Moosehead Lake, Me., July 17, 1907. Hanover, July 5, 1908; 

 Bretton Woods, June 25, 1913, and Chester, Mass., May 26, in the 

 collection of the Boston Society of Natural History. Two para- 

 types, Eastport (cf ), Bretton Woods ( 9 ), in the Museum of Com- 

 parative Zoology, and two from Capens, Me., and Bretton Woods, 

 N. H., in the author's collection. 



The species is readily distinguished by its black facial stripe. 

 In some specimens the fifth, fourth and part of the third abdominal 

 segments are somewhat reddish. 



Sphaerophoria strigata Staeger. 

 This species is common in Labrador and Newfoundland. In 

 New England it has only been collected at Hampton, N. H., May 

 20, 1907, by Mr. S. A. Shaw. 



Melanostoma. 

 The species of the melUninn group of the genus Melanostoma are 

 even more difficult to separate than the species of the genus Sphaero- 



