KATYDIDS AND THEIR KIN, OR THE 

 ORTHOPTERA OF INDIANA. 



The word " Orthoptera" means "straight-winged." 

 It is a name given to an order or group of insects, 

 which comprises the katydids, grasshoppers, crickets, 

 cockroaches, walking-sticks, etc. The members of 

 the 'order may be known by their biting mouth parts, 

 and their indirect metamorphosis; the young when 

 hatched being wingless, but of the same form as the 

 parent; the wings developing gradually and appear- 

 ing of full size after the skin has been shed for the 

 fifth time, when they are membranous and, in the 

 typical forms, laid straight along the back. In num- 

 ber of species the order Orthoptera is a small one, but 

 about 850 having been described from the United 

 States. Of these I have taken, personally, 127 in 

 Indiana, divided among six families, as follows: 

 Blattidce or cockroaches, nine ; Phasmidfe or walking- 

 sticks, one ; Mantidcc or rear-horses, two ; Ijootxfitltv. 

 or katydids and green grasshoppers, 39; Gryllidd'. or 

 crickets, 25; Arrididw or short-horned grasshoppers, 

 51. Taking up briefly, each of these families, let us 

 note the characters which distinguish its members, and 

 give a few facts concerning the habits and life histories 

 of the more common and familiar examples of each 

 which are found in Indiana. 



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