552 



HEMIPTERA. 



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

 cau be introduced into holes and cracks in houses, and sprin- 

 kled on plants. The cracks of bedsteads may be 

 __ tilled with niercur}' ; and benzine will also effectually 

 f\y^ dislodge them, as well as boiling water. The benzine 

 may be applied by means of a surgical instrument 

 Fig. 55i>. called the Atomizer. 



In Syrtls the head is small, compressed laterally', and the 

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

 iSyrtIs (Phymata) erosa Fabr. (Fig. 556) has swollen fore legs, 

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

 Aphides. 



^^-^^^^ 



Fig. 557. 



In Tingis 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 arc of small size. T. JrycdiiiK 

 Herrich-Schaeffer is abundant on the willow. T. hystriceUvs 

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

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

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

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

 black." (Science-Gossip, p. 84, 18G9.) 



