( vii ) 



Scudder, Trichaptwn, Campyloptera, Sphecoptera, Bre'ijeria, 

 Woodwardia, and Corydaloides. 



With the Megasecopterida he classes an ancestral type of the 

 lAheUididcB. 



A single wing only has been found at Commentry. It measures 

 10 centimetres in length, and 2 centimetres in breadth. In form, 

 neuration, and reticulation it reminds one of the living Odonata. 



The third family, that of the Homothetida of Scudder, contains 

 some insects of smaller size, more slender body, more sessile 

 wings, and with more delicate neuration. The nervules are also 

 more numerous than in Megasecopterida. 



In this family are classed Henicristia occidentalis (Scudder), 

 Pachyiylopsis Persenairei (Preudhomme de Borre), Chrestotes (C. 

 lapidea, Scudder); C. Damr, Scud.; (Synon. Miamia DantB, 

 Scud.) ; C. Lvgauensls, Sterzel ; Omalia macroptera (Coeraans 

 and Van Beneden) ; then three new genera from Commentry 

 (genera Oiistaletia, Brachyptilus, Diaphanoptera). 



The last three families of this group include some ancestral 

 types of Ephemerida, Perlida, and Ascalaphus. The Prote- 

 phemerina (genus Homaloneura, near to the living Potarnanthus). 

 The Protoperlida (genera Protodiamphipnoa, ProtokoUaria, Pic- 

 tetia, Protoperla). The Protomyrmeleonida (genus Protascala- 

 phus). 



(4) Hemiptera. 



Up to the present only those types have been found which cau 

 be classed in the group Homoptera ; these are the ancestors of the 

 Fnlgorida: and of the living Cicadella, ; such are Fidgorina Ebersi 

 and F. lehachensis, insects very near to our Fulgora. 



In this same genus Brongniart places some insects from Com- 

 mentry, F. Goldenbergi, F. ovalis, and F. viinor. He is of 

 opinion that the creation of several genera is necessary in order 

 to include some of the specimens that he has icceived from 

 Commentry, viz. : — 



Rhipidioptera eleyuns (Brong.). 



Dictyocicada antiqua (Brong.). 



Palaocixius FayoU and P. antiquus (Brong.). 



Protociccus parvidus and P. fuscus (Brong). 



Mr. Scudder names Phthanocoris occidentalis a wing that he 

 considers as belonging to the Hemiptera-Heteroptera. Brongniart 

 does not share his opinion, and states that lie tinds a great 



