O. nioiifainis and 0. diibiosiis; on Maui, 0. saiidzi'>ichensis, 0. 

 insiilicola. and O. koiianits. They are small wasps, mostly black 

 in color, but some have red mlarkings and others yellow. 



The nests of these wasps are mostly in cavities of lava rocks ; 

 hence, the reason they are so often seen around walls and heaps 

 of stones. Enough caterpillars are placed in a cavity (after hav- 

 ing been stung and paralyzed by the wasp) to provide food for 

 one wasp larva ; an egg is suspended from one side by a slender 

 filament ; then the opening is sealed with mud. The young larva 

 soon eats the caterpillars, then spins a cocoon in which trans- 

 formation to the adult stage takes place. 



GENERAL REAL\RKS. 



The bud worm is not usuallv considered a serious enough pest 

 to demand any special attention ; in fact, its work on the cane is 

 not generally known or understood. The patches eaten by them 

 from the rind have often been ascribed to cockroaches ; and the 

 eating of "eyes." to various other insects. Also their work on 

 the inner side of the leaf-sheath is similar to the way the adult 

 cane borer eats in the same place, and the work of one is likely to 

 be mistaken for that of the other. On the other hand, on account 

 of the presence of one or more of the various lepidopterous larvae, 

 treated of in this paper, in dead or diseased cane, they have often 

 been held responsible for the injury. 



In this paper, an attempt has been made to point out the true 

 habits of these insects, so that when found in cane, it can be 

 readily ascertained whether harmful or not. I'y comparing any 

 larvae found, with the illustrations, the species may be deter- 

 mined, then l\v referring to the text the known habits may be as- 

 certained, and one will know whether to expect injury from them 

 or not. All of the smaller lepidoptera which are known at pres- 

 ent to feed on cane, dead or diseased, are included. As has been 

 pointed out, the majority of them are not injurious. Eor those 

 that do really eat out the "eyes" of cane to some extent, there ap- 

 pears to be no ])ractical remedy, nor is the injury by them sufii- 



