4 MEGALOPTERA 



Rambur : 



1 1 istoire nalurelle des Insectes. Nevropteres, Paris, 1842. 



Schummel : 



Versuch einer genauen Beschreibung der in Schlesien einlieim. Arten dei Gattung Raphidia Linne, 



Breslau, iS32. 



Stein : 



Entwickelungsgeschichte mehrerer Insectengatlungen aus der Ordnung der Neuroptera (Wiegm. 



Archiv f. Naturg. Vol. 4, p. it 5, 553, i838). 

 Beitrag zur Xeuropteren-Fauna Griechenlands (mi't Beriicksichtigung dalmatinischer Aiten . (Berl. 



Ent. Zeitschr. lid. 7. p. 411-422, i863). 



Schneider : 



Monograpliia generis Rhaphidiae, Vratislaviae, p. r-qq. I. i-y, 1S43. 



Stephens : 



Illustrations of British Entomology, etc. London, Vol. (>, 1 836. 



Schock : 



Neuroptera Helvetia?. Planipennia, Schaffhausen, i885. 



Schoyen : 



Fortegnelse over de i Norge hidtil observerede Neuroptera Planipennia og Pseudo-Neuroptera (Christ. 

 Vidensk. Forhandl. X s i3, 1887). 



Wallengren : 



Skandinaviens Neuroptera. Neuroptera Planipennia (Kongl. Svensk. Vetensk. Akad. Handl. Bd. g, 



Stockholm, 1*71). 



Waterhouse : 



Description of the larva and pupa ot Raphidia ophiopsis (Trans. Ent. Sue Lond. Vol. 1, p. 23. 27, 

 i83 4 ). 



Zetterstedt : 



Insecta Lapponica, Leipzig, 1840. 



Imago. — Head elongate, contracted behind. Antennas slender, filiform and nearly as long .is 

 the head and prothorax together; the basal joint very large, the second smaller but larger than the rest. 

 Vertex nearly plane. Eyes prominent; ocelli present in Rapliidia, but absent in Inocellia. Clypeus 

 transverse, almost four times broader than long and with the front angles rounded. Labrum small, nearly 

 quadrate. Mandibles (PI. I , Fig. A b) curved towards the tip and with two teeth on the inner side. 

 Maxillae (PI. I , Fig. Ac) short and broad with a two-jointed maxillary lobe and with a four-jointed 

 maxillary palpus. Labium (PI. I , Fig. Aal longerthan broad; labial palpi three-jointed, the third joint 

 is the longest. Prothorax sub-cylindrical, long, much narrower than the head, dilated posteriorly. The 

 prosternum in the genus Raphidia only visible at the posterior end, the rest concealed by the sides of 

 prothorax. Meso- and metathorax almost equal, transverse and broader than the prothorax. 



Wings hyaline, nearly of the same shape and size ; the forewing the largest. The nervation mostly 

 similar in both pans and very open. The costal area dilated in the middle, especially in the forewings; 



