524 
BIOLOGY AND HUMAN PROGRESS 
bound for New York from the Mediterranean region during 
Civil War times, been blown from her course and forced 
to unload her cargo containing infested fruits at St. George. 
The Mediterranean fruit-fly 
did not become established 
in Australia until steam¬ 
ships and cold storage made 
it possible for the infested 
Mediterranean countries to 
ship oranges to Perth and 
Sydney. With the pest 
established in eastern Aus¬ 
tralia the ships plying be¬ 
tween Australia and Hawaii 
carried the maggots to 
Honolulu, and to-day the 
inspectors of the state of 
California and of the United 
States are intercepting in¬ 
fested fruits on ships arriv¬ 
ing at San Francisco and 
San Pedro from Honolulu 
and Hilo. 
Some conception of the 
extent to which restrictions 
are placed is gained from 
the following list: Importa¬ 
tions of certain fruits from 
Mexico are prohibited ; also 
all pines from Europe, and 
five-leafed pines from Asia, 
Canada, and Newfoundland ; alligator pear seeds from Mexico 
and Central America; all citrus fruit stock from all foreign 
countries; Indian corn or maize and closely related plants 
from India, Siam, China, Malayan Archipelago, Australia, 
Figure 433. — Small Mango Fruit Cut 
to Show the White Larvae or Mag¬ 
gots Which Have Hatched from 
the Eggs of the Mediterranean 
Fruit-fly. 
These maggots burrow in all direc¬ 
tions through the pulp of the fruit, thus 
rendering it unfit for food. A single 
fly may lay as many as eight hundred 
eggs, depositing from six to ten eggs in 
each fruit. This fly is known to deposit 
her eggs in seventy-two different kinds 
of fruits. 
