s 



a faint, irregular discolored line or track leading from the tiny 

 burrow within the seeds through the husk and into the flesh, indi- 

 cated the mode of entrance. It is to be seen from this that the 

 fruit is infested rather late in its development. The larva, ap- 

 parently, on hatching from the egg on the rind or in the flesh, 

 burrows at once to the seed within the husk and the resulting- in- 

 jury to the tissues of the fruit is so slight that soon all evidences 

 of the means of entrance become effaced. 



its injury (See Plate I, B, C, and D.) 



The mango weevil is not known to attack any other fruit. Its 

 injury to the mango is primarily the destruction of the seed. The 

 incisions in the rind do. of course, blemish the fruit and offer 

 places of infection for the germs of decay. In the hrst lot of 

 mangoes examined on July 7, 1905, it was estimated that about 

 60 per cent, were infested, that is, out of 44 seeds examined, 28 

 contained either the larval, pupal, or adult, weevil. The in- 

 spection of another lot of seeds six days later resulted as follows, 

 16 seeds each of the "Number 9," the Chutney and the so-called 

 "Hawaiian" variety being taken: Of the Number 9, 5 were in- 

 fested; of the Chutney, 10 were infested; and of the Hawaiian, 

 8 were infested. 



The following results were obtained from seeds planted in 

 seed-beds: Twelve seeds each of the Chutney and "Number 1" 

 were selected at random, and of the former, 10 were infested. 

 Of the latter, 3 were infested. All of the infested seeds had 

 failed to germinate. In both instances the Chutney variety 

 showed the largest number of infested seeds. 



The injury is much greater this season than last. The writer 

 estimates that fully 80 to 90 per cent, of the mangoes are in- 

 fested this year in what was considered the infested district last 

 year. Where the weevil occurs for the first time this season, the 

 infection is not so great. Xot more than a single specimen was 



