THE MONTHLY BULLETIN. 529 



QUARANTINE h2 Mt^ S DIVISION 



Report for the Month of September, 1915. 



By Frederick Maskew. 



Any one who is interested in reading this monthly report will find 

 under its proper heading a record of the finding of Trypetid larvne in 

 tomatoes from Honolulu. This was the larva of the Mediterranean 

 fruit fly beyond any question, and by the same token it is just twelve 

 months since we made the last record of a similar finding. This long 

 immunity is not due by any means to any diminution of the numbers of 

 this pest in the islands, but rather to the fact that by systematic, collec- 

 tive efforts all of its host fruits have been prevented from reaching the 

 docks at San Francisco during that period. The case in point was one 

 of those exceptions to the general rule, the po.ssible recurrence of which 

 at any time will make forever imperative the thorough inspection of 

 vessels of all classes arriving at the mainland from Hawaiian ports. In 

 this instance the United States ship Supply from Guam via Honolulu 

 had not been in a home port for over three years and hence was not 

 advised of the regulations of Notice of Quarantine No. 13. Replenish- 

 ing her stores of fruit and vegetables — with their omnipresent quota of 

 fruit fly maggots — at Honolulu, she reached San Francisco with a few 

 tomatoes left in the lockers. These, as anticipated, fully complied with 

 specifications. An examination promptly disclosed the presence of 

 maggots and again demonstratecl the necessity of maintaining and 

 strengthening rather than relaxing the rigor of quarantine restrictions 

 on ail known hosts of the INIediterranean fruit fly from this source 

 en route to any point in continental United States. 



SAN FRANCISCO STATION. 

 Steamship and baggage inspection — 



Ships inspected 70 



Passengers ari'iving from fruit fly ports 3,975 



Horticultural imports Parcels 



Passed as free from pests 85,322 



Fumigated 4,422 



Refused admittance 157 



Contraband destroyed 36 



Total parcels horticultural imports for tlie month _ 89,937 



Pests Intercepted. 

 From Celebes — 



Aspidiotus sp. on orchids. 



From China — 



Cplas formicarius in sweet potatoes. 

 Lepidopterous larvae in dried herbs. 



