EDW. JACOBSON, PTILÜCERÜS OCllliACtóUS. 179 



Their flight also is very slow and laboured, and the bugs 

 can easily be captured when on the wing. 



The hindwings are much reduced in size and consequently 

 the forewings are chiefly used for the purpose of flying. 



In copulating the male does not mount the female, but 

 clings to its side, a position necessitated by the shape of 

 the body. 



The eggs are deposited in hidden places, as e.g. the inner 

 wall of a bamboo. They are irregularly spread over the surface, 

 and more or less covered with a white exudation. 



Although the bugs occurred in thousands in the locality 

 mentioned at the beginning of this paper, I rather think that 

 they are not very common, as I have never met with them 

 before, notwithstanding 1 often visited localities of the same 

 altitude, and even at Wonosobo I could not find them any- 

 where else. 



Samarang (Java), June 1909. 



