SYNOPSIS OF NORTH AMERICAN SYRPHID^. 195 



Helophilus hamatus. 



Helophilus hamatus Loew, Ceutur., iv, 79. 



Habitat.- Hudson's Bay Territory (Lw.) ! 



9 . Length, 8.5™"". Face strongly produced, subconic, cheeks black, 

 no median stripe. Antennae subochraceous. Front blackish, thinly 

 clothed with ochraceous pollen near the antennae, short black pilose. 

 Dorsum of the thorax with four rather broad, ochraceous pollinose 

 stripes, the intermediate ones cinerescent. Scutellum reddish. Abdo- 

 men with nearly jjarallel sides ; first segment whitish-cinereous ; the 

 three following segments black, opaque, each with two whitish lunulate 

 spots, the posterior margin shining ; last segment ciuereous pollinose. 

 Legs luteous-brownish ; femora with black markings, hind tibiae with 

 two fuscous rings, the front and hind tarsi wholly and the tip of the 

 middle tarsi fuscous-black. Wings cinereous hyaline, stigmatic spot 

 subfuscous. 



Translation from the original, compared with the type specimen at 

 Cambridge. 



Helophilus divisus. 



Helophilus divisus Loew, Centur., iv, 78. 



Habitat. — District of Columbia (Lw.)! 



9 . Length, 9™"". Face less projecting than in H. obsoletus, integer, 

 and. Iwtus, the antennal arista black, the abdominal lunules narrow, the 

 cinereous wings and the markings of the legs are all different. Pile of the 

 front black, above rather long, at the vertex luteous. Dorsum of the 

 thorax with very short luteous pile, that of the scutellum longer. Four 

 broad stripes and a narrow median stripe, attenuated at each end, lute- 

 ous pollinose. Basal margin of the scutellum black. Luteous fasciae of 

 the abdomen very narrow, bri>ndly interrupted, so that each is divided 

 into two moderately curved lunules; posterior margins of the second, 

 third, and fourth segments obsoletely lutescent, fasciate with subcin- 

 ereous pollen. Pile of the abdomen nearl3^ wholly black. Legs luteous ; 

 the hind ones more obscure, the femora^ except the base and tip, fuscous, 

 at the base with a small black spot ; basal half of the four front femora 

 black ; tip of front tibiae and last two joints of the four front tarsi 

 blackish ; hind tibiae near the base with a subfuscous ring, and the 

 apical third black, hind tarsi black. Wings cinereous. 



Translation from the original, compared with the type specimen at 

 Cambridge. 



Helophilus integer. 



Helophihis integer Loew, Centur., iv, 76. 

 Habitat.— Sew York (Lw.)! 



9 . Length, 9 to lO'"'". Very similar to H. obsolettis, but the pile of 

 the whole body much shorter, and the four dorsal luteous pollinose 

 stripes rather broad and very distinct. Scutellum at the base black. 

 Luteous fasciae of the abdomen broad, the first narrowly interrupted, the 



