168 BULLETIN 31, UNITED STATES NATIONAL MUSEUM. 



Eristalis Bastardi. 



Eristalis Bantardii Macqnart, Dipt. Exot., ii, 2, 35, 7; pL ix, fig. 1. 

 Eristalis aemimctalUcus Macquart, Dipt. Exot., 4e siippL, 140, 65. 

 Eristalis ncbulosus Walker, List, etc., iii, 61(>. 



Eabitat. — New England, Canada, Labrador ! 



S ,9 . Length, 11 to 12""". Eyes pilose, contiguous in the male. Face 

 and front concealed beneath reddish-yellow pollen and yellow pile, the 

 facial stripe and cheeks shining black. Vertex with black i)ile. An- 

 tenna} black ; arista shoitly and thinly pilose. Thorax with abundant 

 bright yellow pile, sparser across the disk, where it is sometimes mixed 

 with black; the deep opaque black ground color is jippareut from above 

 in large part. Scutellum light yellow, with pile like that of the tho- 

 racic dorsum. Abdomen : first segment black with yellow pile ; second 

 segment on the sides with a rather small red spot, sometimes obscure 

 and not quite reaching the lateral nuirgiu; clothed on the sides with 

 yellow pile ; the black wholly opaque with thick black pile, often more 

 or less intermixed with yellow. Third segment usually wholly black, 

 but in some northern specimens broadlj' red on the sides, across the 

 middle with a shining fascia, in front and behind opaque, but not readily 

 perceived, owing to the dense black pile, which is not infrequently in- 

 termixed more or less with yellow, especially on the sides ; remainder 

 of the abdomen wholly bright shining, usually clothed with longer yel- 

 low pile, but sometimes the yellow is mainly confined to the sides. Legs 

 black with black pile; basal portion of all the tibia) yellow. Wings 

 hyaline with a large brown spot in both sexes, sometimes rather faint. 

 Numerous specimens. 



A common species in the New England States. Osten Sacken gives 

 the sj^nonymy of nebulosus from an examination of the type. The type 

 of semimetallicus he also examined and believed it to be the same ; 

 though it might possibly be an allied species. Macquart's descrip- 

 tion certainly applies closely to some individuals, and it seems to me 

 that it is unquestionably a Bastardi. 



Eristalis flavipes. 



Eristalis flavipes Walker, List, etc., iii, 633. 



Eristalis melanostomus Loew, Ceatur., vi, 69. 



Milesia barda Say, J. Acad. Phil., vi, 163; Compl. Wr., ii, 357 (female). 



Habitat. — Canada, New England, Washington Territory!, Minne- 

 sota (Loew). 



5,9. Length, 13 to 17""". Large, shining, robust, black, thickly 

 pilose. Face and cheeks shining black, a little yellowish dusted near the 

 antennte, on the sides very sparsely whitish pilose. Eyes broadly contig- 

 uous in the male, their pile chiefly confined to a dense vertical stripe. 

 Frontal triangle yellow pollinose and with abundant yellow pile; in the 

 female the front is broad above, thickly reddish-yellow polhnose and 

 with abundant yellow pile, above the base of the anteunse somewhat 

 shining. Antennae brownish-black, often somewhat reddish, arista thin- 



