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the thorax ; short antennae ; wings, sometimes one pair and 

 sometimes both pairs, absent ; and when present they are 

 membranous. This group includes the True Lice (e.g., the hair 

 lice, Pediculus capitis, or ukun), the Aphides or plant-lice and 

 the Coccidae insects (bark-lice or scale insects), both of which 

 are known by the generic name of blights or blight-insects. 

 They also include Cicads and Membracidae. Two species of 

 Membracidae we commonly see at the Sibpur Farm in October 

 and November on our arahar^ cotton and Hibiscus cannabinus 

 plants, ants keeping watch over them and feeding on the 

 honey they secrete. The larger of the two membracidae 

 which we have at Sibpur is the Oxyrachis tarandas, the honey 

 of which is made use of by a big black ant (Camponotus scre- 

 ceus), and the smaller one is the Loptocentrus reponens, the 

 honey of which is made use of by a small black ant (Dolicho- 

 deridae). 



FlG. 69.--HEMIPTERA HETEROPTERA (BUGS). 

 (a) Leptocorisa acuta. (6) Lohita grandis. 



r,2i3- Of the heteropterous insects may be mentioned 

 (t) Apinis concinna, a pentatomidae bug which attacks rabi 



