Ord. IJ^. Fam. K., Perlariae. 211 



sect. , tom. i3, p. 5o. — Genre Nemoure. Prec. des Caract^ 

 gener. des Insect. , p. 101. 



Fausse-Frigane d J un brnn noirdtre , d corps alonge , d ailcs 

 longues, cendrees , avec des ncrrures brunes. De Geer. Mem. 

 s. I. Insect., tom. i, p. 73o, pl. 23, fig. 16. 17. 



La Ferle brune d ailes pdles. Geoff. Hist. des Insect, , 

 tom. 1 , p. 2.Z1 ? 



Habitat in Europie aquosis. 



Perla cylindrica de Geer, tom. 7 , p. 5gg, pl. kk,fig. 17, 

 18, congenerica , prscedenlis forsan varielas ; Pbrvganea nebu- 

 losa Linnaji , Semblis nebulosa Fabricii, an eadera species ? 



CCCCXXIII. Genus. Perla. Perle. 



Perla , Geoff., de Geer , Oliv. , Lam. — - Phry- 

 ganea , LiNN. — Semblis , Farricii. 



Labrum transverso-lineare, vix exsertum. Mandibulce 

 submembranacea?, valde depressae, semi-byalinae, elon- 

 gato-trigonae, apice ( in nonnullis saltem) emarginato, 

 subtridentato. Palpi subsetacei , articulo ultimo prae- 

 cedeuti graciliore; labialium radicali sequentis magui-. 

 tudine. Maxillce processibus valde compressis , semi- 

 byalinis, conniventibus; externo longiore , angustiore , 

 subarcuato , sublanceolato ; interno latiore, breviore, 

 trigono. Labium subquadratum, ad basin paulo latius, 

 antice lamcllis duabus, in medio conniventibus , rima 

 longitudinali interposita, palpos gerentibus, clypeatum; 

 margine supero lobis duobus transverso-ovalibus, ma- 

 gis membranaceis, veluti spongiosis, distinctis, coronato. 

 Tarsi articulis duobus primis ultimo multo breviori- 

 bus , secundo saltem subtus spongioso, subbifulo. 



Caput valde depressum , boiizontale, antice clypei- 

 formiler produclum. T/iorax sculplus. Anus setis cau- 

 dalibus articulatis , valde distinctis. 



