( V ) 



All the insects belonging to these genera may be regarded as 

 the ancestral type of the Saltatoria of the present day. 



(2) Neurorthoiytera. 



This order, which is created by Brongniart, includes two sub- 

 orders — that of Neurorthoptera properly so called, and that of the 

 Palseodictyoptera (Golden berg). 



The first suborder comprises : — 



1. The family of the Protophasmida (Brong.), represented by 

 the genera Protophasnia, Lithophasnia (which he created for a 

 wing figured by Goldenberg under the name of Gryllacris 

 LitJiantraca); Titanophasma (Brong.), of which only the gigantic 

 body, measuring 28 centimetres in length, is preserved ; and the 

 genus Archegognjllus [A. priscus, Scudder). 



2. The family of the Sthenaroptericla, which includes Mega- 

 neura Monyi, a wing measuring 33 centimetres in length — 

 previously named by Brongniart Dictyoneura Monyi ; Archa- 

 optilus ingens (Scudder), and A. Lucasi, wings which must have 

 attained 25 to 30 centimetres in length. 



In this first suborder of the Neurorthoptera, Brongniart has 

 placed some insects of large size, whose wings have strong nervures 

 united by a rather loose reticulation, insects which have some 

 likeness to living Phasmians by the form of their bodies, but 

 which are separated from them by the neuration of the wings. 

 He considers the Phasmians as much modified descendants of 

 these ancient types. 



Tho second suborder has been created by Goldenberg, and has 

 been adopted by other authors. It contains a series of insects of 

 rather large size, which seem to have completely disappeared 

 from the existing fauna. 



The first family, that of the Stenodlctyopterida, is composed of 

 insects which have a thick and short, but broad body, strong legs 

 of moderate length. 



This family contains six genera : — 



1. The genus Eugereon of Goldenberg (Eugereon Boeckingii, 

 Gold., Eugereon Heeri, Brong.) is characterised by a short and thick 

 but broad body ; the head is small, the prothorax is scarcely broader 

 than the head, whilst the mesothorax and the metathorax are 

 much broader and longer. The legs are short and thick, and 

 seem to be spiued. 



