MORSE: ORTHOPTERA OF NEW ENGLAND. 213 
this the typically winged insects (class Pterygogenea) are divided 
into eleven subclasses, and those comprising the old order 
Orthoptera are re-arranged as follows: — 
Class Pterygogenea. 
Subclass Orthopteroidea. 
(Order Grylloblattoidea — one species, — Rocky Mts.) 
Order Orthoptera. 
Suborder Acridoidea — Acridiidae, Tettigidae. 
Suborder Locustoidea — Locustidae, Gryllidae, Gryllotalpidae, Tridac- 
tylidae. 
Order Phasmoidea — Phasmidae. 
(Order Dijiloglossata — Hemimeridae, — So. Africa.) 
Order Derniaptera — Earwigs, with four families. 
(Order Thysanoptera — Thrips, — two suborders and three families.) 
Subclass Blattaeformia. 
Order Mantoidea — Mantidae. 
Order Blattoidea — Blattidae. 
Five other orders, including the termites, bark-lice, bird-lice, and suck- 
ing lice. 
In the present work, which is intended for relatively general 
and popular use, it seems wisest to be somewhat conservative 
and adopt a modified form of the customary arrangement, as 
follows : — 
Order Derma pt era. 
Order Orthoptera. 
Family Blattidae. 
" Phasmidae. 
" Mantidae. 
" Tettigoniidae. 
" Grj'Ilidae. 
Subfamilies Gryllinae, Oecanthinae, Trigonidiinae, Gryllotalpinae, 
Tridactylinae. 
Famih' Acrididae. 
Subfamilies Acridinae ( = Trj'xalinae) , Oedipodinae, Locustinae 
( = Acridiinae), Acrydiinae ( = Tettiginae). 
In this arrangement of the groups it will be noticed that I have 
placed the Acrididae after the Tettigoniidae and Gryllidae, and 
the Burrowing Crickets and Pygmy Locusts (Acrydiinae) last in 
their respective families. I have done so on the ground of the 
greater specialization of structure which they exhibit. 
