ORT ALID^E — CH^TOPSIS. 169 



or the fourth longitudinal vein it is so very faint that it extends 

 to the posterior margin of the wing in the shape of a gray 

 shadow ; the small crossvein lies, when the band is not too pale, 

 almost exactly upon its external margin. The third band passes 

 over the posterior crossvein, is narrow and generally rather pale, 

 except in the vicinity of the anterior margin ; towards the poste- 

 rior end of the crossvein it almost disappears ; from the fourth 

 band it is separated by a rather large, whitish-hyaline spot in the 

 marginal cell ; behind the second longitudinal vein fully colored 

 specimens have, on the outer side of this third band a rather 

 distinct gray shadow, between which and the fourth band only a 

 narrow, whitish hyaline interval remains, from which, however, 

 the above-mentioned hyaline spot near the costa is completely 

 isolated. The fourth band, which lies along the apex of the wing, 

 extends as far as the fourth longitudinal vein, or else it crosses it 

 in the shape of a gray shadow. The last section of the fourth 

 longitudinal vein is rather strongly curved and convergent towards 

 the third vein. 



Hab. Cuba (Gundlach). 



Gen. VIII. CHJETOPSIS Loew. 



Charact. — Front of medium breadth, somewhat narrower towards the 

 vertex, with a row of bristly hairs on the lateral border ; the 

 remaining surface not hairy. 



Antennie rather short ; third joint very little excised on the upper 

 side, with a sharp anterior corner and a thin, bare arista. 



Face but moderately excavated; clypeus but little projecting over the 

 anterior border of the mouth. 



Thorax with bristles on its posterior part only; clypeus convex, with 

 four bristles. 



Wings: posterior angle of the anal cell drawn out in a point; last 

 section of the fourth longitudinal vein, towards its end, but very 

 little convergent with the third vein ; posterior crossvein perpen- 

 dicular. 



The species known to me are conspicuous for the striking 

 length of the bristles, inserted on the posterior part of the thorax 

 and on the scutellum. Their coloring is metallic ; the wings are 

 adorned with well-defined black crossbands. They cannot well 

 be confounded with the species of the preceding genus, on account 

 of their greater slenderness, and more especially, on account of the 

 different shape of the third antennal joint and of the front, which 

 is hairy on its lateral borders only. From the two next following 



