534 



HEMIPTEKA. 



broad head and prominent eyes. The mules have a musical 

 apparatus beneath the wings on the basal ring of the abdomen, 



which acts like a ket- 

 tle drum, producing 

 a loud, penetrating, 

 shrill sound. Cicuilu 

 i-iiitosa of Say, our 

 smallest species. l>e- 



little before the mid- 

 dle of June. The 

 ('. pruinoHii Say is 

 larger and appears 

 later, being an au- 

 tumnal species. Pro- 

 fessor A. E. Verrill 

 has observed this species in Norway. Me., laying its eggs in 

 the stems of Solidago or Golden-rod. It made a longitudinal 

 incision with ragged edges into the pith of the plant, then with 



its oviposi- 

 tor forced its 

 eggs a little 

 distance 

 down in tin- 

 pit h below 

 the external 

 opening ; 

 there \v ere 

 two rows of 

 e g g s sue- 

 ceedino; the 



ft r s t single 

 one, each 

 pair diverg- 

 ing o u t - 

 wards, the 

 lower ends 



of each pair nearly touching each other, and all placed very 

 near together. The habits of the Seventeen ye:ir locust, Ch-u<l, 



