NO. 1 6.] ORTHOPTERA OF CONNECTICUT. 1 25 



middle, often shorter than the wings ; vertex termi- 

 nating in a rounded tubercle or prominent cone ; pro- 

 notum without or with only one transverse sulcus. . 



conocephalin,e p. 132 

 4. Pronotum extending back to the abdomen ; prosternal 

 spines present; fore tibiae with a hearing organ near 



the base; tegmina rudimentary decticin^: p. 140 



Pronotum short, not covering the whole top of thorax; 

 prosternal spines absent ; fore tibiae without a hearing 

 organ near the base. Wholly wingless. Eyes sub- 

 rounded, situated partly above the basal joints of the 



antennae ; ovipositor nearly straight 



stenopelmatin^e p. 142 



phaneropterin^e. 



This sub-family and the Psendophyllince include the insects 

 known as katydids, and here belong our largest species of Lo- 

 custidce. Head with apex obtuse or rounded, without cone or 

 spine. Prosternum unarmed. The wing covers are of a bright 

 green color and usually expanded in the middle. The wings are 

 large and strong, and extend beyond the wing covers. 



The katydids are the most arboreal of all the Locustidce, are 

 solitary in habit, and, while they may be quite numerous and do 

 much injury to the leaves and twigs of shrubs and trees, are 

 seldom noticed. 



Key to Genera. 



Tegmina of nearly equal breadth throughout, fastigium of 



vertex no broader than the first antennal joint 



Scudderia p. 125 



Tegmina widened at the middle ; fastigium of vertex much 



broader than the first antennal joint. . Amblycorypha p. 129 



Scudderia Stal. 



The katydids of this genus are medium-sized. Head oval, 

 with fastigium of vertex very narrow. Thorax longer than 

 broad. Wing covers long and narrow, of nearly the same width 

 throughout, and rounded at apex. The fore and middle femora 

 unarmed beneath ; hind femora long and slender. The short, 

 broad ovipositor is curved sharply upward with the apical third 



