I 12 Hemiptera-IIomoptera. 



The female larva, by a retrograde development, loses 

 its antenna; and legs, becoming a rounded, swollen, 

 and almost mcmberless creature. As the eggs are de- 

 posited, the body of the louse shrinks, and finally oc- 

 cupies only a small space, at the anterior or narrow 

 end of the scale. The eggs are deposited during the 

 month of August. This insect is single brooded in 

 the North, but double brooded in the South. 



The male larva develops into a dipterous individual, 

 furnished with halteres, and with the mouth-parts ob- 

 solete. 



Note differences between the scales formed by the 

 males and those formed by the females. 



The enemies of this species are mites, lady-birds, and 

 a chalcis-fly, Aphelinus niytilaspidns Le Baron. 



Remedies. — Scrape and prune the infested trees, and 

 afterwards apply some oily substance ; as linseed oil or 

 lard. The oil is absorbed through and under the 

 scales, and destroys the eggs. This may be done in 

 the winter, but it is better to do it in early spring, af- 

 ter the sap begins to flow. 



A strong solution of soap will kill the young lice if 

 applied during the period of hatching. (3, I., 7; 3, 

 v., 73 ; I, 528 : 2, 252). 



CiCADARLE (" Locusts "). 



The members of this family are remarkable for their 

 large size, being the largest of the Homoptera, and for 

 the musical apparatus of the males. 



The following are the most common species. — 

 The seventeen year locust, Cicada septendccim Linn. 

 — E<res laid in the twigs of various trees. For a care- 



