SYNOPSIS OF NORTH AMERICAN SYRPHID^. 71 



have a slight greenish reflection; antenute bhick, third joint some- 

 times slightly reddish at the base ; front and vertex black, with a green- 

 ish reflection and black pile ; occiput beset with a fringe of fulvous 

 pile. Thorax dark metallic green, clothed with fulvous pile, especially 

 conspicuous on the pleurae; scutellum with a shade of dull yellowish 

 under the strong greenish metallic luster; its pile is black; a few ful- 

 vous hairs on the sides only. Abdomen b!ack, very little shining; on 

 the second segment two oblong yellow spots, not reaching the lateral 

 margin ; on the third and fourth segments a pair of deeply lunate spots, 

 club shaped at both ends, touching the anterior margin on one side, 

 broadly contiguous to the lateral margin on the other ; the deep ex- 

 cision on them has a triangular shape ; fourth and fifth sc^gments with 

 a narrow yellow posterior margin. Halteres with a lemon yellow knob. 

 Legs reddish ; anterior femora black on their proximal half; hind fem- 

 ora black, except the tip ; hind tibi» with a brown ring in the middle, 

 the other tibia? also slightly marked with brown; tarsi brownish above. 

 Wings distinctly tinged with brownish; stigma brownish. 



Three males, April 15-20. 



Very like Syrphns amalojm O. S., from the White Mountains, Kew 

 Hami)shire, but the pile on the occiput is bright fulvous, not pale 

 yellowish white; there is more iulvous pile on the thorax; the ab- 

 dominal spots are a little larger, their inner club-shaped end more 

 clnmsy, the emarginatiouVleeper; the legs are less dark colored; the 

 facial tubercle less prominent. Nevertheless, the resemblance is very 

 striking. 8. amcdopis seems to be a very variable species. The same 

 variations may occur in ti. intfudens.^' — Osten Sacken, 1. c. 



Syrphiis contumax. 



Siirphus contumax Osteu Sacken, Proc. Bost, Soc. Nat. Hist., xviii, 148, 1875. 

 Sip-phus adolcsceits Walker, List, etc., iii, 584. 



Habitat— White Mountains, New Hampshire ! 



" 5 , 5 . Length about 9.5""". Eyes distinctly pubescent. Face with 

 a bluish reflection, sometimes almost concealing the dull brownish yel- 

 low ground color. Cheeks and oral border broadly black ; front very 

 broad in the female, black, clothed with grayish pollen ; in the male 

 with a bluish reflection. Vertex greenish black, metallic. Antennae 

 black, inserted on brownish yellow ground. Thorax greenish bronze 

 color, with indistinct longitudinal stripes of an opaque brownish; dor- 

 sum beset with brownish; pleurae with brownish fulvous erect pile; 

 scutellum dull yellowish, with a bluish reflection. Abdomen black, very 

 hairy, with three pairs of oblong, transverse, straight, brownish yellow 

 spots, which as a rule do not reach the margin, but sometimes emit an 

 indistinct prolongation anteriorly which touches it ; the last two seg- 

 ments are bordered with yellow ; the pile on the abdomen, yellow and 

 black, is, especially in the male, long, erect, and rather conspicuous. 

 Femora (ot the male) black on their proximal half, often beyond, hind 



