CHRYSOTUS. 183 



green, without any trace of a violets coloring. The pulvilli of all 

 the tarsi are very small. 



Hab. Middle States. (Osten-Sacken.) 



10. C. auratus Loew. 9 • — Viridis, tliorace et scutello auratis, polline 

 lutescente subopacis, femorum nigrorum apice tibiisque oinnibus flavis, 

 facie latiuscula albido-pollinosa, palpis nigris. 



Green, thorax and scutelluin gilded, somewhat dull on account of a luteous 

 dust ; the tip of the black femora and all the tibiae yellow ; the rather 

 broad face covered with white dust ; palpi black. Long. corp. 0.11. 

 Long. al. 0.11. 



Syn. Chrysotus auratus Loew, Neue Beitr. VIII, 65, 7. 



Metallic-green. Face even for a female rather broad, with 

 gray-white dust ; the usual transverse swelling lies very far below 

 its middle. Palpi black. The third joint of the antennae rather 

 large for a female, with comparatively long hair. Front golden- 

 green, rather dull on account of a yellowish dust, only a little 

 broader upwards. The upper side of the thorax greenish-golden, 

 but thickly covered with yellow dust and therefore opaque. Color 

 and dust of the scutellum the same as those of the thorax. Abdo- 

 men of a purer metallic-green and with less dust, near the basis 

 usually more golden-green. Coxae black, the extreme tip of the 

 first joint and the second joint of the fore coxae yellow, the second 

 joint of the hind coxae yellowish-brown. Femora black with in- 

 distinct green or bronze-colored metallic lustre ; the tip of the 

 four anterior femora is to a larger, and that of the hind femora to 

 a smaller extent, yellow. The tibiae and the tarsi have the same 

 color, but the latter, towards their end, gradually become dusky. 

 The hair upon the feet is everywhere very short, and the bristles 

 very scarce. Cilia of the tegulae pale. Wings somewhat grayish 

 with brown veins ; the posterior transverse vein lies about midway 

 between the extreme root and the tip of the wing. 



Hab. New York. (Osten-Sacken.) 



B. Femora of a pale color. 



11. C. pallipes Loew. % and 9 .— Viridis, nitens, coxis anticis pe- 

 dibnsque flavis. 



Shining green, the fore coxa? and tbe feet yellow. Long. corp. 0.09—0.10. 



Long. al. 0.10—0.11. 

 Syx. Chrysotus pallipis Loew, Neue Beitr. VIII, G6, 8. 



