June 1937] SEKVICE AXD REGULATORY AX>rOUXCE>rEXTft 
7 
sclerotiornm (38-262), *S'. gladioli (5-22), Sclerotium oryzae (18-115), S. rolfsii 
(9-45), Septoria apii (19-100), S. petroselini (15-54), Sphnceloma perseae (5-174), 
Sphaecelotheca sorghi (5-18), Sphaerothcca pannosa (2-4), Spondylocladium 
atrovirens (60-1,791), Spongospora suhterranea (19-116), Stilbum incarnatum 
(1-13), Stysanus stemonites (11-17), Tilletia foetans (3-5), T. laevis (4-34), T. 
iriiici (3-7), Uromyces appendiculatus (7-9), U. caryophyllinus (4-8), Ustilaqo 
hordei (2-6), U. tritici (4-5), U. zeae (2-20), Venturia inaequalis (36-357), F. 
pyrina (12-72), Verticillium cinnabarina (36-243): Total of these disease inter- 
ceptions, 15,214. 
INCOMPLETELY DETERMINED PESTS 
INSECTS 
In addition to the common pests determined to genus and species and the more 
important interceptions listed in the detailed table there are thousands of pests 
intercepted which cannot be determined to species. Many of these belong to 
groups containing species of considerable economic importance and may be 
potentially more dangerous than most of the pests in the detailed table. Since 
their status is unknown and cannot be determined we cannot well do more than 
to call attention to them briefly in an effort to give as comprehensive a view of 
the interception records as is practicable. 
Of the insect pests intercepted a total of 3,024 could be determined to family, 
subfamily, or tribe only. A total of 7,228 other lots of insect pests, determined 
to genus only, were distributed among 1,004 genera. The largest number of 
interceptions included under any one of these 1,004 genera is 434 under Parlaioria. 
For some genera there was a single interception. Under Ceutorhynchus sp. there 
are records of 159 interceptions from a total of 17 countries and associated with 
14 different hosts. Under Pseudococcua sp. there are records of 178 interceptions 
from a total of 40 countries in practically all parts of the world and on a total of 
63 hosts. Total of these insect interceptions, 10,252. 
DISEASES 
Partially determined plant pathogens belonged to 106 genera and totaled 7,429. 
For approximately 40 of these genera there was a single interception each, while 
there were 3,365 interceptions of Fusarium sp. and 25 or more interceptions for 
each of more than 20 other genera. A brief analysis of the data for two of these 
genera showed that Gloeosporium sp. was intercepted 217 times on 48 different 
host genera and from 37 countries, including every continent, and that Sclerotium 
sp. was intercepted 67 times on 28 host genera and from 20 countries. Total of 
these disease interceptions, 7,429. 
The figures presented give an indication of the diversity of the interceptions 
included in the undetermined groups of both insects and diseases. 
Summary of interceptions by continents and subdivisions 
Country- 
Africa- 
Africa 
Algeria 
Angola 
Canary Islands. 
Egypt.... 
Kenya 
Liberia 
Madeira Islands 
Morocco 
Nyasaland 
Tanganyika 
Tunis.. 
Union of South Africa 
V.'pst Africa 
Asia- 
China 
French Indo-China... 
India. 
Japan 
Palestine 
Siam 
Straits Settlements... 
Insects Diseases 
Number 
1 
3 
3 
2 
40 
Number 



2 



1 
2 



38 

16 

Country 
Asia— Continued. 
Syria 
Taiwan 
Turkey 
Australasia (including Pacific 
Islands): 
American Samoa 
Australia. 
Ceylon 
Dutch East Indies.. 
Fiji Islands 
Hawaii 
Java 
New Zealand.. 
Philippines _ 
Pitcairn Island 
Sumatra 
Tahiti. 
Europe: 
Austria 
Azores. 
Belgium.. 
Czechoslovakia 
Insects Diseases 
Number 
4 
2 
48 
