The Long-Horned Grasshoppers 



individuals around, whose similar day song I had heard, began to 

 respond with the night cry. The cloud passed away, and the 

 original note was resumed on all sides. The day song is reduced 

 to scale by Scudder as follows : 



Fig. 227. Day song of Scudderia curvicauda. (After Scudder.) 



tchw tchw tchw tchw tchw tchw tchw 



Fig. 227a. Night song of same. (After Scudder.) 



Typical Life History of a Katydid 



( Microcentnim retinervis 



This insect, commonly known as the angular-winged katy- 

 did, is a common species throughout the more southern portions 

 of the United States, extending as far north as New Jersey on 

 the Atlantic Coast. This insect hibernates in the egg stage. The 

 eggs are flattened, oval, of a slate-brown color, about four mm., 

 in length, and are laid in a curious double overlapping row on 

 twigs of trees and in other situations. In the south, where the 

 insect has two generations annually they are even laid on the 

 edges of leaves, in which case one row will be found on one side 

 of the leaf and the other row on the other side. They are some- 

 times also laid in peculiar situations, as on the edge of a fence 

 board, and the writer once received a batch from a western cor- 

 respondent which was found on the edge of a freshly laundried 

 collar which had laid for some time in a bureau drawer. Riley 

 records oviposition on the edge of a piano cover and on a long 

 piece of cord. The females begin to oviposit in the early fall and 

 continue to lay at intervals until killed by frost. The surface of 

 the twig is first roughened by the jaws and then the ovipositor 

 is moved up and the eggs are laid one after another, the successive 

 ones being pushed for a short distance under the edge of the one 

 immediately preceding, the number varying from two to thirty 



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