306 DIPTERA OF NORTH AMERICA. [PART II. 



wing-Tibs and poisers pitchy ; veins black. Length of the body 2 

 lines, of the wings 4^ lines. 



a. "West Indies. From Mr. Children's collection. 



Page 648. Psilopus siiavium, n. s. 



Yiridis, capitis vertice cyaneo-purpureo, abdomine apicem ver- 

 sus purpureo, antennis pedibusque nigris, feraoribus viridibus, alis 

 limpidis, fusco bifasciatis. 



Body bright green, beset with black bristles ; head bluish-pur- 

 ple on the crown, clothed with white down in front ; eyes red ; 

 mouth pitchy ; feelers black ; bristle nearly as long as the chest ; 

 breast and sides of the chest covered with a white bloom ; abdo- 

 men purple towards the tip ; legs black, beset with black hairs and 

 bristles ; hips and thighs green ; hips covered with a white bloom ; 

 thighs clothed with white hairs ; wings colorless, adorned with two 

 brown bands, which are joined together on the fore border and 

 more slightly on the disk, but do not reach the hind border nor 

 the tip ; veins black ; wing-ribs and poisers pitchy. Length of 

 the body 2^ lines, of the wings 5 lines. 



a. Jamaica. From Mr. Grosse's collection. 



Page 648. Psilopus amatms, n. s., Mas. et Fern. 



Yiridis, capite purpureo, abdomiue nigro-fasciato apice pur- 

 pureo, antenuis nigris, pedibus piceis, fernoribus viridibus, alis sub- 

 cinereis, costa apicem versus nervisque transversis fusco nebulosis. 



Body bright green, beset with black hairs and bristles ; head 

 purple, covered in front with white down ; crown of the male 

 adorned with a green spot on each side ; eyes red ; mouth and 

 feelers black ; bristle a little shorter than the chest ; hind part of 

 the chest tinged with blue and purple ; sides and breast covered 

 with white down ; abdomen at the tip purple in the male, bluish- 

 purple in the female ; hind borders of the segments in the male 

 adorned with black bands ; legs pitchy, beset with black hairs and 

 bristles; hips and thighs green, the former covered with white 

 down ; wings slightly gray, indistinctly marked with brown towards 

 the tips of the fore borders and along the cross-veins ; wing-ribs 

 pitchy ; veins black ; poisers of the male pitchy, of the female 

 tawny. Length of the body 1^ If line, of the wings 3| 4 lines. 



a. New York. Presented by E. Doubleday, Esq. 



b. Trenton Falls. Presented by E. Doubleday, Esq. 



