SYNOPSIS OF NORTH AMERICAN SYRPHIDiE. 149 



Steel-blue; head and dorsum of the thorax with ])allid pile, ou the rest 

 of the body black; wiugs hyaliue, with a large black median spot. 



Head black, front and face, except the cheeks, yellow, occipital orbits 

 whitish polliuose ; pile of the front, of the face, of the eyes, and of the 

 posterior orbits pallid; cheeks bare. Antennae subfuscous, the first 

 joint and the arista pitchy black." Thorax black shining; the dorsum 

 with light yellowish pile, on the pleurne and pectus black. Scutellum 

 plane, purplish, or pitchy purplish, without bristles, clothed with black 

 pile. Abdomen broad, somewhat flattened, shining, short black pilose; 

 terminal segments of a deep steel-blue, or a purplish steel-blue, the an- 

 terior segments purplish. Venter deep steel-blue, short black pilose. 

 Legs black, with short black pile; tibiae, except the tip, red, near the 

 immediate base infuscate. Head of the halteres white. Wings rather 

 long, hyaline, with a large black spot, touching the middle of the costa 

 and including the cross-veins; veins before this spot chiefly ochraceous- 

 ferrugiuous, in the spot itself and ou the outer part of the wing fuscous 

 black, the costa itself and the first three longitudinal veins near the spot 

 ochraceous-ferruginous. 



Translation from the original, compared with the two type specimens 

 in the Museum of Comparative Zoology at Cambridge. 



Volucella apicalis. 



Volucdhi apicalis Loew, Centiir., vi, 36. 



Habitat. — Cuba (Loew)! 



c? . Length, CS-"'". Yellowish-reddish, base of the abdomen lighter, 

 the tip more obscure, very obsoletely roughened. Dorsum of thorax 

 with scoriaceous stripes, ultimate joints of the tarsi black, apical half 

 of the wings blackish clouded. 



Head luteous, lace much produced, shining, theantennte of the same 

 color, the third joint above lightly concave. Thorax yellowish-reddish, 

 with four dorsal, scoriaceous stripes, pectus piceous. Abdomen yellow- 

 ish-red, the first two segments (except the hind margin of the second) 

 pallid, terminal segments obsoletely subscoriaceous. Legs saturate lu- 

 teous; third joint of tlie front tarsi black fuscous, last two joints of all 

 the tarsi black. Halteres white. Wings dilutely sublutescent, near 

 the costa luteous, posterior margin clouded with cinereous, veins of the 

 apical half broadly and indeterminately clouded with fuscous black, the 

 clouds of the second, third, and fourth veins confluent. 



Description translated from the original and compared with the type 

 specimen in the Museum of Comparative Zoology. 



Volucella chaetophora, n. sp. 



Habitat. — Mexico ! 



$. Length, 10™°^. Face, yellow translucent, lightly, polliuose on the 

 sides above; not much produced downward, the nearly straight lower 

 border of the cheeks forming an angle of about lOOO-llOo with the plane 



