334 Professor Aldrich on the 



and black parts visible. A few moderately long bristles at 

 the end of sixth, as of the other segments. Front coxae green at 

 base, changing through brown to yellow at the tip, considerably 

 white pollinose. A row of black bristles at the tip, and a few 

 fine yellowish hairs on the front side. Middle and hind coxae 

 blackish, the former has a number of stout bristles on the fore side, 

 one near the base is more lateral and quite prominent. Hind coxae 

 with a single lateral bristle. Trochanters all yellow. Femora 

 all dark-green, somewhat shining ; the front and middle ones 

 broadly, the hind ones slightly, yellow at the knee. Tibiae all 

 yellow, the hind ones a little infuscated at the tip. Front and 

 middle tarsi elongated, slender, yellow, infuscated from the tip of 

 first joint ; hind ones shorter and thicker, wholly infuscated. 

 First joint longer than the following one, on its under surface with 

 a long slender upright bristle. Front pulvilli a little enlarged. 

 Wings large, wide toward the apex, yellow before the third vein. 

 The first and second veins are rather far from the costa, and enter 

 it at a less acute angle than usual. The third vein runs close to 

 the second to its end, then turns with a strong curve backward, 

 reaching the margin just before the apex. The last section of the 

 fourth vein in the shape of a gentle double curve, ending just 

 behind the apex, 



2 . Front as in the male. Face rather wide, the suture distinct, 

 less pollinose than in the male. Hind metatarsus without the 

 bristle. Wings of the ordinary width, not yellow before the third 

 vein ; venation exactly like that of Eutamus aullcus, Meig., in 

 Loew's Monograph, pi. vi., 28 c. 



Length 3"5-5'5 mm. ; of wing, 3-4*3 mm. 



Numerous specimens of both sexes. Sea level to 

 1500 feet. March and May. One specimen labell(3d 

 " Forest by stream.^' 



The venation of the male varies from that described to 

 a form like that of the female. 



EUTARSUS. 



Loew, Neue Beitr., v., 1857. 



1. Eufarsus sinuatus, n. sp. (PI. XI., fig. 104, wing. 

 PI. XXL, fig. 110, 6 wing; fig. 115, ? wing.) 



$ . Face exceedingly narrow, almost linear ; silvery pollinose 

 on a dark ground colour. Palpi small, yellow. Front narrow, of 

 same colour as face. Antennae situated high up, the front there- 

 fore short and the face long. They are very short, the third joint 



