ORTALID^E — CHiETOPSIS. HI 



ble; darker specimens have the color of the feet more brownish- 

 yellow, the root of the front coxae and the tip of the tarsi dark- 

 brown; the femora of such specimens often show conspicuous 

 black, metallic-green longitudinal stripes; the darkest specimens 

 have the whole basal half of the femora, and even more, of this 

 black coloring, while the tibiae also are partly infuscated. 

 Halteres yellowish-white. Wings with three brownish-black 

 bands; the veins are black upon these bands, but ochre-yellow 

 elsewhere, which gives the whole basal part of the wing an 

 ochre-yellowish tinge. The first band begins at the costa with a 

 short black stigma, is perpendicular and rather dark, as far as the 

 fourth longitudinal vein and even beyond ; the remainder of the 

 band, as far as the posterior margin of the wing, is usually very 

 faint ; the small crossvein is a little beyond the margin of this 

 band; the second band runs over the posterior crossvein and is 

 perpendicular and rather broad ; its posterior end is very pale ; 

 with the third band it is generally connected only by a dark 

 border along the costa; sometimes, however, this border becomes 

 broader and extends in some specimens as far as the second 

 longitudinal vein. The third band, running along the apex, is 

 likewise rather broad, extends as far as the fourth longitudinal 

 vein, and even beyond it, in the shape of a gray shadow. The 

 last section of the fourth longitudinal vein, beyond its middle, 

 converges towards the third ; near its tip, however, this conver- 

 gency becomes again much less. 



HaJb. United States, rather common (Osten-Sacken); Louisiana 

 (Schaum) Cuba (Gundlach). 



Observation 1. — The comparison of the types in Wiedemann's 

 collection do not allow any doubt about the determination of this 

 species; they belong to the variety of a paler, but not of the 

 palest, coloring. Say's good description of Ortalis trifasciata 

 refers to the variety with dark feet. That Macquart's Urophora 

 fulvifrons belongs here seems certain; that he placed the species 

 in the genus Urophora is no objection, because he did the same 

 with several Ortalidse; the figure of the wing, which he gives, is 

 incorrect, as the comparison of the description shows; the latter 

 proves conclusively thai; the second crossvein on the middle of the 

 wing is an arbitrary addition ; it seems that Macquart drew the 

 small crossvein correctly on the extreme limit of the first cross- 

 band ; later, however, in finishing his figure, he noticed that in 



