552 



HEMIPTEKA. 



lied cheap petroleum, mixed with 1,000 parts of water. It 

 <-aii be introduced into holes and cracks in houses, and sprin- 

 kled on plants. The cracks of bedsteads may In- 

 filled with mercury : and benzine will also effectually 

 dislodge them, as well as boiling water. The benzine 

 may be applied by means of a surgical instrument 

 i};. 5.->i;. called the Atomizer. 

 ]n Xyrtt'x the head is small, compressed laterally, and the 

 fore legs are raptorial, thus allying the genus with Reduvius. 

 tiyrtis (Phymata) erosa Fabr. (Fig. 550) has swollen fore legs, 

 and a deep groove on the head; it is useful in devouring 

 Aphides. 



Iii Thirjis the beak reaches to the end of the breast, and the 

 fore legs are simple, the thorax and wing-covers are spread 

 out leaf-like, and the species are of small size. T. hi/]fn 

 Ilerrich-SchaetTer is abundant on the willow. T. liyxfri<-<'l/nx 

 iJiditer (Fig. 557, upper and under side, magnified twenty 

 diameters) is a Ceylonese species. It ""sticks close to the 

 under side of the Bringall leaf, and there undergoes all its 

 changes, from the larval to the perfect state. The larvai are 

 black/' (Science-Gossip, p. 84, 18(50.) 



