BY EDWARD NEWMAN. 175 



the upper surface ; the under surface and legs are paler, and 

 slightly tinged with red ; the eyes are black, the tips of the 

 antennse are dusky ; the transparent portion of the fore wings is 

 longitudinally striated. In habit this insect somewhat resembles 

 Coreus quadratus of authors ; the head, antennse, and prothorax 

 are very similar, but the abdomen is so much narrower that it is 

 entirely covered by the wings, and the head, though pointed, is not 

 produced into a spine, as in that species ; it also exceeds C. qua- 

 dratus in length, being in this respect fully equal to C. scapha. 



A pair of this species were taken at Norbury Park, near 

 Mickleham, in September, 1836, by Mr. B. Standish, and pre- 

 sented by him to the cabinet of the Entomological Club. 



Class. — Neuroptera. 



Natural Order. — Perlites, Newman. 



Genus. — Pteronarcys, Newman. 



Caput transversum ; porrectum ; cum ooulis, thorace angustior : oculi 

 rotundati, laterales, distantes ; antennse ad orem sitae ; filiformes ; 

 basi ad apicem pedetentim attenuantes, multi- articulates : instru- 

 menta cibaria, fere membranacea, mollia ; desiccando corrugant ; 

 labrum transversum, lineare, sub clypeo fere reconditum : mandi- 

 bulse membranaceae, obtusse : maxillarum lacinia vix membranacea, 

 brevis, acuta ; galea exarticulata, apice obtusa, lacinia paullo 

 longior ; maxipalpi galea duplo longiores, 5-articulati ; articulus 

 1°% brevis, 2"^, 3"^, 4"'.que, longiores, extus valde crassiores, 

 5°% cylindricus, incurvus : labium quadrature , antice postic^que 

 truncatum, antice paullo angustior, lateribus subrectis ; palpiger 

 fere quadratus, lateribus rectis ; labipalpi maxipalpis breviores, 

 3-articulati, articuli longitudine subsequales, 1"^ 2"'.que extus cras- 

 siores, 3"'. cylindricus incurvus ; ligula trifida, divisiones laterales 

 acutae, subpalpiformes, mediana obtusa rotundata : prothorax fer^ 

 quadratus, longitudine paull6 latior, capite paullo latior, margini- 

 bus leviter elevatis : alse amplissimse, sexuum amborum pariter 

 volantis repandse, pariterque sedentis abdominem tegentes ; pro- 

 alarum nervurae, quae e disco ad marginem apicalem extendunt, 

 etiam regionis posterioris nervurae, etiam metalarum nervurae 

 apicales, nervuris numerosis transversis intersectae : csetera Perlce, 

 Hoc genus e Perla facile distinguebis, magnitudine majori, alis- 

 que reticulatis : ordinis principes includit : species nunc confir- 

 matae tantum tres ; Amei'icam Borealem incolant. 



