OF rillLAUEM'llIA. 77 



costal margin by a diluted line of the same color; feet ]»lack ; 

 thighs and coxre blackish-blue. 



Length rather more than three-twentieths of an inch. % . 



This .species closely resembles D. sipho, but it is much smaller, 

 the bands of the wings without any obliquity, and the feet en- 

 tirely colored. 



[Belongs to Psilopu.'<. — Sacken.] 



SARGUS Latr. Meig. 



S. viRiDis. — Body green, polished ; wings dusky ; eyes above 

 brassy. 



Inhabits the United States. 



Body green, polished, varied with brassy, and in a certain 

 light purplish, and covered by very short hair; eyes very large, 

 brown, when recent deep green, polished beneath, above tinged 

 with bras.sy, sub-opaque, [88] and separated from the green of 

 the inferior portion, by a red line ; antcnnao black; labia pale; 

 tibia blackish. 



Length seven-twentieths of an inch. 



Var. a. Bluish-purple. 



Var. b. Bluish-purple ; abdomen green. 



A very pretty species ; I found it near Cincinnati, perched 

 upon a leaf; it is also an inhabitant of the Atlantic States. It 

 has a bright-green appearance, although covered with very short 

 hairs, but these are hardly discernible to the unassisted eye. It is 

 closely allied to S. xanthopterus Fab., but the joints of its feet 

 are not yellowLsh, as those of that species are. 



SC.TIVA Fubr. Lutr.* 



\. S. POLITA. — Thorax with a yellow line each side, and a 

 cinereous dorsal one; tergum with band and quadrate spots 

 yellow. 



Inhabits the United States. 



Head yellow, above the antennie dusky silvery ; thorax some- 

 what olivaceous, a yellow line above the wings, and a dorsal 

 cinereous one : scutel dusky yellowish, with a paler margin ; feet 

 wbitish ; tergum black, basal segment with a basal lateral eilgc; 

 1823.] 



*The name now adopted for this genus is Syrphus Linn. — Sackex. 



