Cockroaches, Locusts, Grasshoppers, and Crickets i 49 



indicated in llie figure. In the genus Tettigidea the antennae have from 

 15 to 22 segments, while in Tettix they have only 12 to 14 segments. Tet- 

 tigidea lateralis (Fig. 195) is a common spdcies yellowish brown in color, 

 more yellowish underneath. It is rather robust and the pronotum extends 

 beyond the tip of the abdomen. 



Included in the family Locustidae are katydids, meadow grasshoppers, 

 cave-crickets, wingless crickets, western crickets, Jerusalem crickets, and 

 what not, but no locusts. The general reader of natural history should 

 always keep clearly in mind the 

 sharp distinction made by natu- 

 ralists between "scientific" and 

 "vernacular" names. The ver- 

 nacular name locust is applied 

 to insects of the family Acri- 

 diida?, but not to any of the 

 members of the family whose 

 scientific name is Locustidae. 

 Of the Locustids the best 

 known representatives are un- 

 doubtedly the katydids. Anna 

 Botsford Comstock, the nature- 

 study teacher of Cornell Uni- 

 versity, introduces them to her 

 readers as follows: "The 

 chances are that he who lies 

 awake of a midsummer night 

 must listen, whether he wishes 

 to do so or not, to an oft- 

 repeated, rasping song that 

 says, 'Katy did, Katy did; she 

 did, she didn't,' over and over 

 again. There is no use of won- 

 dering what Katy did or didn't 

 do, for no mortal will ever 

 know. If, when the dawn 



comes, the listener has eyes ^,^ „ , . j , . .. ■ 1 , <■ .. 



-' tie. 1Q9. — Broad-wmged katydid, and leaf with 



sharp enough to discern one of katydid eggs along edge. (Natural size.) 



these singers among the leaves of some neighboring tree, never a note of 

 explanation will he get. The beautiful, finely veined wings folded close 

 over the body keep the secret hidden, and the long antenna;, looking like 

 threads of living silk, will wave airily above the droll green eyes as much 

 as to say, 'Wouldn't you like to know?'" 



