368 



in the wheel nits ; from their appearance, they were several 

 ■weeks or more old." 



1915. a. Illingworth, J. F. — Coconut leaf -roller [Omioid-es 

 blackburni (Bntl.)] destroved bv ants. Proc. Haw. Ent. Soc. 

 Ill, 142. 



P. megacepJiala destroyed both the egg-masses and the cater- 

 pillars of the above pest, in Palolo Valley, so successfully that 

 no pupae resulted. The ants first cut away the under-part of 

 the web, that protects the young caterpillars, and then pulled 

 them out. 



1915. b. Illingworth, J. F. — Xotes on the hen flea 

 (EchinopJiaga gaJJinaccd Westw,). Proc. Haw. Ent. Soc. Ill, 

 252. 



The ants were observed removing the larvae of the fleas 

 from the dust of the roosting-board. 



1915. ]\Iuir, F. — Review of the autochthonous genera of 

 Hawaiian Delphacidae. Proc, Haw. Ent. Soc. Ill, 180 and 

 203. 



The author attributes the absence of Delphacids from a cer- 

 tain food-plant, that contained numerous unparasitized-eggs, 

 but no nymphs or adults, to the numerous ants (P. megacp- 

 phala), which swarmed over the plant. 



On page 203, in discussing the death factors of Delphacids, 

 the author says: "At the present time the introduced ant 

 {Plieidole megacephaJa) plays a very important part in the dis- 

 tricts in which it can thrive, and it is likely it will lead to the 

 extinction of certain species." 



