260 MODETtN SYSTEM. 



Stirps 2. — Tail with three filaments. 



Genus 391. EPHEMERA of authors. 

 Sp. 1. Eph. vulgata. (PL l.fg. 2.) 

 Inhabits marshes, and the banks of rivers- 



Section TT. FILICORNES. 



Anteyince longer than the head, not subulate : uiiigs generally deflexed? 

 or incumbent. 



Fam. III. P.\>oriPiD.E. Leach. 



Panorpat^. Latrcillc. 



Jfeaci anteriorly produced into a rostrum : avwn's equal, ovate-elliplic, 

 lying one over the other : ocelli three, approximate, arranged in a 

 triangle. 



Genus 392. PANORPA. Linn., Tahr., Lam., Latr., Leach. 



Tarsi with two bent claws, denticulated beneath, having a spongy pul- 

 villus between them : palpi nearlj^ equal, filiform; the last joint cy- 

 lindric-ovate : mamiiblcs 'with their points distinctly bidcntate: alxlo- 

 men of the male with the three last joints forming a tail armed with 

 a forceps. 



Sp. 1. Pan. communis. {PI. 7. fig. 5. a. clicia magnified.) 



Inhabits hedges, and is very abundant in this country. 



Fam. IV. IIf.meroriad^. I^.ach. 



IIemerobini. Latreille. 



Antenna filiform or setaceous : palpi four : wings equal : tarsi five- 

 jointed. 



Stirps 1. — Ocelli or little e3'es not distinct. 



Genus 393. CIIRYSOPA. Leach. Utlu-e^omw?, of authors. 

 Antenncc (at least as long as the body) with cylindric joints longer than 



broad. 

 Sp. 1. Chri/s. Perla, 



Hemerobius Perla. Limit, Fabr., Latr. Chrysopa Perla. Leach. 

 Inhabits woods, and is a common species. 



Genus 394. IIEINIEROBIUS. Leach, 4c. 

 Antenna; as long or siiorter than the body, with moniliform joints. 

 Sj). 1. Hem. variegatus. 



Inhabits : is rare near London. 



Stirps 2. — Ocelli three, distinct. 



Genus 395. OSMYLUS. Latr., Leach. Hemerobius. Fab.'-. 

 Villers, Roemer, Don. 

 Antenna: moniliform. 



Sji. 1. Osm.maculatus. Fuscous; head and feet testaceous: wings hairy, 

 the upper ones and the costal margin of the inferior ones spotted 

 with black. {Pl.7.fg.4.) 



