SYNOPSIS OF NORTH AMERICAN SYRPHID^. 35 



the hypopygium, brassy, much shining; in the single female specimen 

 the brassy color is confined to the sides of the first two segments and 

 the anterior angles of the third. Legs shining greenish black. Wings 

 Avith a distinct blackish tinge, stigma brown, outer posterior angle of 

 first posterior cell rounded or obtusely angulated, usually with a stump 

 of a vein, the tip of fourth vein strongly bent inward. 

 Four specimens. 



Chrysogaster pulchella, u. sp. (Plate II, fig. 9.) 



Habitat. — Xew Hampshire, Connecticut, Canada! 



$ , 9 . Length, 4^ to 5"^™. Antenna yellowish or brownish red, the 

 third joint black, except at the base ; second joint less than half the 

 length of the third, the whole antenna about as long as the face. Head 

 deep metallic greenish black; face with delicate striae on the upper half, 

 and a small triangular, silvery spot near the eye on each side above, 

 epistoma considerably protuberant; in the male the face is more nearly 

 straight in profile with a short, rather deep concavity on the lower part. 

 Frontal triangle not rugose, a little swolhn and pitted ; front in female 

 narrowed above, strongly rugose on the sides, in the middle with a slen- 

 der, longitudinal space, and the lower part, smooth. Eyes unicolorous. 

 Dorsum of thorax strongly metallic, but little shining, greenish brassy, 

 delicately roughened, with four coppery, in some reflections purplish, 

 stripes. Pleurae brilliant. Abdomen not very broadly oval, opaque 

 black on the disk, brilliant metallic on the margins and venter. Legs 

 metallic black; extreme tip of femora, base and tip of tibiai, and first 

 two joints of the tarsi, reddish yellow. Wings nearly hyaline, faintly 

 clouded on outer part, stigma brown, last section of fourth vein nearly 

 straight, a little oblique, so that the anterior angle of the cell is slightly 

 obtuse. 



Sixteen specimens from the White Mountains, N. H. (July 25-30), two 

 additional ones from the same regions from Dr. George Dimmock 

 (1561-2), and two others from Connecticut, June 20. The third joint 

 of the antennae may be in large part yellowish red, the black confined 

 to the upper border and distal part. The last section of the fourth vein 

 is usually quite straight, but sometimes slightly sinuate, and in one spec- 

 imen with a stump of a A^ein near the middle on the inner side. 



Chrysogaster nitida. (Plate II, figs. 7, la.) 



Chrysogaster nitidus Wiedemaan, Anss. Zwei. Ins., ii, 116, 1. 

 Ci-yptineura hieroghjphica Bigot, Rev. et Magaz. de ZooL, 1859. 

 Paragus aeneus Walker, List, etc., iii, 545. 

 Orthoneiira hieroglyphica Loew, Ceatur., iv, 58, uote. 



Orthoneura nitida Schiner, Novara Exped. Dipt., 368, 99; Osten SacJien, Cat. 

 Dipt., 121. 

 HahUat.— Iiew England, Pennsylvania, Virginia, South Carolina, 

 Kansas!. South America (Schiner). 



(?, $. Length, 4 to 5"^°'. Head brassy metallic black. Antennae longer 

 than the face, first and second joints yellowish red or brownish, the 



