148 PERLIDES. 



Div. 1. 



Areola custalis vix areolis reliquis colore diversa. 



Subdiv. 1. 

 Alae aequaliter hyalinae vel opacce. 



Sect. 1. 

 Protliorax rufescens, linea marginali nigra. Ala? flavido-fuscas. 



Subsect. 1. 

 Prolborax gultis maculisve duabus nigris. 



22. Perl A bi punctata. 



Ven(B fuscce, rohustce. 



Perla bipunclata, Pictet, Ann. Sci. Nat. xxviii. (1833), 12, pi. 5, f. 



12—14. Hist. Nat. Neur. Perl. 187, 13, pi. 11, 12. 

 Perla bicaudata, Neivm. Mag. Nat Hist. iii. 35. 

 Perla cephaloles, Burm. Handh. Ent. ii. 880. 



rt, h. England. Presented by J. C. Dale, Esq. 

 c. England. 



23. Peela pallida. 



VencB flavescentes. 

 Perla pallida, Guer. Icon. Reqne Anim. Ins. pi. 63, f. 5. Texte, 

 393. Pictet, Hist. Nat. Neur. Perl. 192, 14, pi. 13. f. 8. 



Caucasus. 



Subsect. 2. 

 Prolborax maculis nigris nullis. 



24. Perla im punctata. 

 Perla impiinctata, Pictet, Hist. Nat. Neur. Perl. 194, 15, pi. 13, f. 9. 

 Rome. 



