378 CATALOGUE OF 



Male. Yellowish white, slender. Head and fore tegulae of the 

 thorax slightly tinged with yellow. Vertex with a brown point. 

 Proboscis tawny. Palpi brownish, smooth, slender, porrect, extend- 

 ing rather beyond the bead ; third joint conical, not more than one- 

 fourth of the length of the second. Antennae brown, slightly pec- 

 tinated ; branches black. Abdomen white, not extending beyond 

 the hind wings ; a very pale fawn-coloured band on the fore border 

 of each segment; apical tuft yellow, very small. Legs smooth, 

 slender; anterior legs and hind tarsi mostly fawn-colour; spurs 

 short. Wings elongate. Fore wings hardly acute ; exterior border 

 slightly convex and oblique. Hind wings white. Length of the 

 body 6 lines ; of the wings 20 lines. 



a. ? From Mr. Children's collection. 



Genus AECHYLUS, C. L. H. vii. 1718. 



Archylus pectoealis. 



Mas. Argenteo-alba ; caput Jlavescens, antice atrum ; antenna 

 pallide ochracece ; pectus antice atrum ; abdominis segmenta 

 aurato-flavo marginata ; tibice postica calcaribus duobus 

 apicalibus brevissimis ; alee antica? costce dimidio basali stri- 

 gisque decern nigris. 



Male. Pure silvery white. Head pale yellow, deep black in 

 front. Antennas pale ochraceous, rather broadly pectinated. Fore 

 legs above and fore part of the pectus deep black. Abdomen not 

 extending beyond the hind wings; hind borders of the segments 

 gilded yellow. Hind tibiae with very short apical spurs. Fore 

 wings rounded at the tips ; costa black for more than half the length 

 from the base ; ten black streaks ; one subcostal, near the base ; 

 three before the middle, and six exterior, of which the third and 

 fourth are much longer than the others. Length of the body 6 lines ; 

 of the wings 16 lines. 



a. Rio Janeiro. Presented by the Rev. H. Clark. 



Genus NAXA, C. L. H. vii. 1742. 



Naxa ten era. 



Mas et fcem. Alba^ gracillima; palpi porrecti, caput perpaullo 

 superantes ; antennce subpubescentes ; pedes gracillimi ; alee 

 macula discali, punctis antemediis fasciisque duabus macu- 

 laribus postmediis nigricantibus ; anticce strigulis costalibus 

 transversis apicibusque nigricantibus. 



