552 



HEMIPTERA. 



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

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

 kled on plants. The cracks of bedsteads may be 

 •^3 filled with mercur}' ; and benzine will also effectually 

 •|,A, dislodge them, as well as boiling water. The benzine 

 ^\. may be applied by means of a sm'gical instrument 

 Fig. 556. called the Atomizer. 



In Syrtis the head is small, compressed laterall}^, and the 

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

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

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

 Aphides. 



''TTrffV}-Ti 



So#:- 



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 are of small size. T. liyalina 

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

 Eichter (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. Tlie larvo3 ai-e 

 black." (Science-Gossip, p. 84, 1869.) 



