Snail identifications are made by workers in the Plant Quarantine Division 
and the Division of Mollusks of the Smithsonian Institution. Disease, nema- 
tode, and host identifications are made by personnel of the Plant Quarantine 
Division and the Crops Research Division. 
Scientific names of insects and diseases are reviewed by specialists of 
the Plant Quarantine Division who assist in compiling the list. Nematode 
names are checked in Nematology Investigations and host names in the New 
Crops Research Branch. The common names given for hosts are usually 
those shown in Standardized Plant Names. Every effort is made to conform 
to the International Rules of Nomenclature. 
Family names of insects, mites, and snails are given in the tabulation 
and orders are shown in the host list. All the diseases in the tabulation are 
fungi, except as noted after the names. 
NOTES ON PESTS INTERCEPTED 
The total number of interceptions submitted during the fiscal year 1967 
was 41,015. Of those identified during the year, 11,407 were considered 
of enough significance to be tabulated, as compared with 9, 486 the previous 
year. This does not include the non-economic or the incompletely deter- 
mined pests, of which a total of 1,006 interceptions were indexed for the 
files but were not added to the figures in the summary. 
Pestina, the hitchhiking) buses 1s 
used by the U.S. Department of 
Agriculture to symbolize destruc- 
tive foreign plant and animal pests 
and diseases that threaten U.S. 
resources. Such pests, capable of 
causing millions of dollars damage, 
often hide on foreign fruits, plants, 
and meats that are as innocent- 
looking as PESTINA. The symbol 
is used to remind travelers toleave 
behind such items unless they have 
USDA clearance. 
