BUREAU OF ENTOMOLOGY AXD PLANT QUARANTINE 71 
ing in apparent violation of Federal domestic quarantines or State 
quarantines, including those against the pink bollworm, sweetpotato 
weevil, peach mosaic, gypsy moth, and Japanese beetle, in the enforce- 
ment of which the Bureau of Entomology and Plant Quarantine co- 
operates. These shipments were consigned to 42 States and the 
District of Columbia. Transit inspectors observed 302 shipments 
moving in apparent violation of State nursery-inspection certification 
requirements or State quarantines and reported them to the States 
concerned. 
Transit inspection was carried out at 17 major transportation cen- 
ters strategically located with respect to the loug-distance movement 
of regulated articles from regulated areas. Inspectors of the white- 
fringed beetle projects and State inspectors in California, Florida, 
and Michigan cooperated in the work. 
INSPECTION SERVICE IN DISTRICT OF COLUMBIA 
CONTINUED 
Examination was made of 48,423 shipments of plants entering the 
District of Columbia to determine whether they were certified and 
free from insect pests and plant diseases. Of these, 25 shipments 
lacked the required State certification, and 4 were destroyed or 
returned to the sender because pests were present. Certificates were 
issued for 742 shipments containing 39.600 plants sent from the Dis- 
trict of Columbia to 44 States, Hawaii, Puerto Rico, and the Dominion 
of Canada. In these shipments inspectors found 19 kinds of insect 
pests, 1 species of nemotode, and 15 plant diseases. Diseased or in- 
fested plants were treated when possible, destroyed, or returned to 
the shipper. 
Forty-seven trucks bringing potted plants or nursery stock into the 
District were intercepted. With few exceptions all truckers had valid 
inspection certificates for their stock. Truckers failing to carry cer- 
tificates of inspection were released on evidence that the stock was 
eligible for certification. One truck shipment was destroyed because 
of a severe plant-pest infestation. 
DESTRUCTION OF KLAMATH WEED BY IMPORTED INSECTS 
Destruction of the Klamath weed in northern California by the 
two foliage-feeding Chrysolina beetles imported from Australia in 
1944 and succeeding years has progressively increased. The weed is 
now extremely scarce in an area of approximately 100 square miles 
near the original points of beetle release in Humboldt County. Dur- 
ing the year several million Chrysolina gemellata were collected in 
this county for redistribution within Humboldt and 14 other coun- 
ties. This species has also increased in southern Oregon until it can 
now be redistributed within that State. 
The Klamath weed root borer Agrilus hyperici Creutz. and the gall 
fly Zeuxidiplosis giardi Kieff., both imported early in 1950, have 
become established iu the California mountainous areas where Chrys- 
olina is not fully effective. 
