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818 CATALOGUE OF 



Genus 4. XANTHOPTERA. 



Corpus sat gracile. Proboscis mediocriter longa. Palpi 

 breves, graciles, subascendentes, caput vix superantes ; articulus 

 3us minimus. Antennae simplices, corporis dimidio valde longiores. 

 Abdomen alas posticas perpaullo superans. Pedes sat graciles ; 

 tibiae posticae calcaribus longissimis. Ala3 anticae sat lata?, apud 

 costam vix convexae, apice rotundatae, margiue exteriore sat oblique. 

 Mas. — Sexualia louga, fasciculata. 



Xanthoptera, Guen. Noct. ii. 240. 



Body rather slender. Proboscis moderately long. Palpi 

 short, slender, slightly ascending, hardly extending beyond the 

 head ; third joint very minute. Antennae simple, much more than 

 half the length of the body. Abdomen extending very little beyond 

 the hind wings. Legs rather slender ; hiud tibiae with very long 

 spurs. Fore wings moderately long, hardly convex in front, 

 rounded at the tips, rather oblique along the exterior border. 

 Male. — Abdominal appendages long, tufted. 



North America. 



1. Xanthoptera nigrofimbria. 



Straminea ; alee anticce claviformi et reniformi e punctis duobus 

 nigris, linea marginali nigra, ciliis nigro, plumbeis ; posticce 

 cinereo- alb idee, margine obscuriore. 



Xanthoptera nigrofimbria, Guen. Noct. ii. 241, 1025. 



North America. 



2. Xanthoptera semiflava. 



Flava ; abdomen cinereum ; alee anticce dimidio apicali oblique 

 ferrugineo ; posticce cinerece, margine fuscescente. 



Xanthoptera semiflava, Guen. Noct. ii. 241, 1027. 



a. United States. Presented by E. Doubleday, Esq. 



3. Xanthoptera semicrocea. 



Flava,- caput et prothorax fusca ; abdomen cinereum ; alee anticce 

 dimidio apicali recte ferrugineo ; posticce cinerece % margine 

 fuscescente. 



