CHRYSOTUS. 175 



II. THE THIRD JOINT OF THE ANTENNAE NOT ELONGATED AT ALL. 



A. Femora of a dark color. 

 A. Ground color of the palpi pale. 



2. C. loilgimanus LOEW. . Viridis, nitens, palpis albis, tarsis 

 anterioribus tenuibus et longis. 



Green, shining, palpi white, the four anterior tarsi long and slender. Long. 



corp. 0.14. Long. al. 0.14. 

 SYN. Chrysotus longimanus LOEW, Neue Beitr. VIII, 62, 1. 



Shining green. Face of uniform, and for a male, rather consi- 

 derable breadth ; the covering of white dust does not entirely con- 

 ceal the green-blue ground color. Palpi white, not very broad, 

 but for a male rather long. The third joint of the antenna? not 

 large, rather kidney-shaped ; the position of the arista rather pre- 

 cisely apical. Front metallic-green, very little dusty and towards 

 the vertex very little enlarged. Upper side of the thorax covered 

 only with a thin brownish-yellow dust. Coxae and femora black 

 with a blue-green metallic lustre, which is more distinct on the 

 femora ; the tip of the fore coxa? yellow, the tip of the posterior 

 coxae dusky-brown. On the anterior feet the tip of the femora, 

 the tibia? and the greatest part of the first joint of the tarsi are 

 yellow ; the remainder of the unusually slender and long fore tarsi 

 is dark brown ; the hind tibite are yellow, but distinctly infuscated 

 at the tip ; the hind tarsi are dark brown. The hair upon the 

 feet is short and the bristles very scarce. Cilia of the tegula? 

 pale. Wings distinctly tinged with gray and with rather black 

 veins. The posterior transverse vein is more distant from the 

 root of the wing than in most of the other species. 



Hob. Middle States. 



3. C. validus LOEW. f . Aureo-viridis, nitens, palpis flavis, basim 

 versus nigricantibus, pedibus flavis, femoribus posticis excepto apice 

 nigris, viridi-micantibus, feinoribus anticis nigro lituratis. 



Golden-green, shining, palpi yellow, towards the basis blackish ; feet yel- 

 low, hind femora with the exception of the tip black, with greenish lus- 

 tre, the anterior femora striped with black. Long. corp. 0.13. Long, 

 al. 0.13. 



SYN. Chrysotus validus LOEW, Neue Beitr. VIII, 63, 2. 



Golden-green, shining. Face for a female of moderate breadth ; 



