642 CATALOGUE OF 



rather slender, not long ; hind tibiae with four spurs of moderate ' 

 length. Wings narrow. Fore wings straight in front; first and 

 second inferior veins nearly contiguous at the base ; third much 

 nearer to the second than to the fourth. Hind wings convex in 

 front ; discal areolet thickened ; three inferior veins, first and 

 second united at the base, third remote. 



1. Arara vittipes. 



Foem. Ochracea ; caput albido varium ; palpi albidi, articulis 

 2o Soque apice nigris ; antenna fulvce ; thorax nigra bigut- 

 tatus ; abdomen basim versus subtus et apud margines posticos 

 albidum ; pedes albidi, femoribus tibiisque nigro vittatis ; 

 alee anticce luteal, ex parte ochracetz, fascia subtrigona alteraque 

 exteriore lata obliqua purpuras centibus vittisque nigris albido 

 marginatis ; posticus pallide suhlutece, fere hyalince. 



Fern. Ochraceous. Head whitish about the eyes on each side 

 of the vertex. Proboscis tawny. Palpi whitish ; tips of the second 

 and third joints black. Antennae tawny, whitish above towards the 

 tips. Thorax with a black dot on each side in front of the base of 

 each fore wing. Abdomen whitish beneath towards the base ; hind 

 borders of the segments whitish. Legs whitish ; femora and tibia? 

 with black stripes. Fore wings luteous, partly ochraceous, with a 

 nearly triangular purplish band, whose greatest breadth is on the 

 fore border when it extends from the base to beyond the middle of 

 the wing ; it is connected behind its base, (which is truncated) with 

 another broad and very oblique band which proceeds from it to the 

 middle of the exterior border; the veins in these bands are accom- 

 panied by black whitish-bordered stripes, and the bands also contain 

 a few black dots. Hind wings nearly hyaline, with a slight pale 

 luteous tinge which is most prevalent about the borders. Length 

 of the body 5 lines ; of the wings 12 lines. 



a. Brazil. From Mr. Stevens' collection. 



Genus 21. SCAPTiUS. 



Mas, Corpus cylindricum, longiusculum. Oculi magni, ex- 

 tantes. Proboscis corporis dimidio brevior. Palpi longiusculi, 

 ascendentes; articulus 2us arcuatus, lo multo longior; 3us conicus, 

 minimus. Antennae subserratae. Abdomen alas posticas longe 

 superans. Sexualia parva, occulta. Pedes validi, non longi ; tibiae 

 posticae calcaribus quatuor longiusculis. Alae angustae, antice sub- 

 convexae. 



