~ 1912] Mediterranean Fruit Flies 407 
fallen fruit. Attention has already been called to the fact that 
the wild guavas which are available for the pest to breed in 
during the entire year cover thousands and thousands of acres 
in the mountainous districts. If only a small per cent of the 
fruit flies breeding in these wild fruits are caught up by the 
winds blowing from the mountains towards the city of Honolulu, 
what ultimate results can be expected from the clean culture methods 
of the present Mediterranean fruit fly campaign! 
After sending this manuscript to the editor we received from Dr. A. 
Berlése a paper entitled, ‘‘Expériences Exécutées en Italie pour Combattre la 
Mouche des Oliviers.’’ presented at ‘‘Ier Congrés International d’Oléiculture 
(Toulon, 1908)’’ in which he states that the olive fly, Dacus oleae Rossi obeys 
“Vinstinct de diffusion, émigrent au loin, A la recherche de nouveau ambients. 
En outre, dans la premiére génération printnaiére-estivale l’instinct de 
migration se montre trés développé chez les femelles. A cette époque 1’on 
constate que certaines émigrations couvrent de grandes distances. Cela est 
éstrange, lorsqu’on pense a la commodité qu’auraient les mouches Adéposer, a 
cette époque, leurs oeufs la ou elles sont nées. Au contraire, elles vont parfois 
les pondre a plusieurs kilométers (k—3,280.8 feet) de distance.’’ 
We are deeply indebted to Prof. Harry C. Severin, State Entomologist of 
South Dakota, who has given us valuable suggestions in reading the manuscript 
with us. 
BIBLIOGRAPHY. 
1. Mally, C. W., 1904. The Fruit Fly (Ceratitis capitata, Wied.). Repr. Agric. 
Jour. Dec. No. 28, Cape of Good Hope. pp. 1-18. 
2. Newman, L. J., 1910. Fruit Fly. Dept. Agric. and Industries, Western 
Australia, Bull. 38, pp. 1-11. 
EXPLANATION OF PLATE XXIX. 
Map of Manoa Valley. This valley is walled in by mountains on all sides 
except the seaward side. The elevation of the mountains are indicated. The 
two thousand marked, male Mediterranean fruit flies were liberated at the head 
end of the valley. 
EXPLANATION OF PLATE XXX. 
Head end of Manoa Valley. Some of the fifty kerosene traps were wired among 
the branches of fruit trees situated along the white line. 1, 2, and 3 points of 
liberation of the two thousand marked, male Mediterranean fruit flies. 4, Citrus 
grooves. (Reproduced by permission of E. Bonine, photographer.) 
