53 



to the pupae inside. I liave bred 105 parasites from one wasp 

 larva. They escape from tlie mud cell of the wasp by gnawing a 

 tiny hole through the plug of mud which sealed it. 



Polistes aiirifer Saus. 

 Polistes hebraeus Fab. 

 Polistes macaensis Fab. 



Fauna Hawaiiensis, I, Pt. I, pp. 29, 80, 1899. 



These three species of wasps are verj^ common thruout the 

 islands. They are commonly known as "yellow jackets," and 

 build paper nests under eaves, etc., of buildings, and also other 

 sheltered places. They are very common in cane fields, in 

 search of " honey dew." They also catch leaf-rollers to some 

 extent. Tliey appear to skin the caterpillar, chewing up the 

 outer muscular body- walls into a pulpy mass to carry away to 

 their nests to feed their young. 



Xiphidium \aripenne Swezey. 



Swezey, H. S. P. A. Exp. station, Ent., I, Pt. 7, 

 p. 212, 1905. 



This very abundant grassliopper, which preys upon the cane 

 leaf-hoppers, I have also o]:)served feeding upon cane leaf-rollers 

 ( Omiodes accepta) in cane-iields. It prol>aV)ly feeds upon other, 

 grass-feeding Omiodes as well. 



Oechalia griseus, Burm. 



Fauna Hawaiiensis, III, Pt. 11, p. 171, 1902. 



This large native predaceous l)Ug, I have seen in a few cases 

 feeding upon cane leaf-rollers {^Omiodes accepta). It was in 

 cane-fields of elevated parts of plantations where they were near 

 to native forests Avhere this l)Ug lives. 



