305 
ANNUAL ADDRESS. 
Notes on the Mealy-Bugs of Economic Importance in Hawaii. 
BY DAVID T. FULLAWAY. 
(Presented at the meeting of December 7, 1922.) 
These notes have resulted from a study of our common dactyl- 
opiine species? made preparatory to handling the material col- 
lected by H. T. Osborn in Mexico, which, during the past few 
months, has been chiefly mealy-bug enemies. Mr. Osborn’s in- 
vestigations in this field began primarily with the definite pur- 
pose of introducing and acclimatizing the coccinellid beetle 
Hyperaspis silvestrii, observed by Koebele and Silvestri to be an 
important enemy of Pseudococcus nipae in Mexico. The pursuit 
of this object led him gradually to widen the scope of his work, 
with the result that we have received from him numerous and 
sizable shipments of four species of coccinellid beetles, in addi- 
tion to Hyperaspis silvestrii, and five or six internal parasites 
of mealy-bug species existing here. While the extent of Mr. 
Osborn’s achievement in Mexico could scarcely be anticipated, 
the results amply justify a belief which I have held for some 
years; namely, that, in view of the comparative scarcity of some 
of the species existing here which are attacked by internal para- 
sites, it should be possible to ameliorate present conditions with 
regard to other species unchecked by internal parasites, by seek- 
ing out such enemies as exist and introducing them here. I 
believe all of the economically important mealy-bug species 
found here have been brought to the islands in the course of 
time with plants. In some cases, one or other of their enemies 
have been brought with them, or have since been purposely 
introduced. Undoubtedly the present situation with regard to 
mealy-bug infestations represents a great improvement over the 
Proe. Haw. Ent. Soc., V, No. 2, September, 1923. 

1 According to list following. Wriococcus araucariae and species of 
Asterolecanium omitted from consideration, as Hriococcus and allies and 
Asterolecanium and allies are now viewed as separate subfamilies. The 
affinities of Phyllococcus also being in question, that genus has not been 
included in the present discussion either. 
