June 1938] SERVICE AXD REGULATORY ANNOUNCEMENTS O 
albo-aimm on dahlia from Belgium, Germany, Italy; and Netherlands, on En- 
murus from Netherlands, and on Ficus from Italy. 
Numerous interceptions of cereal rusts and smuts were made which may repre- 
sent strains not present in this country, but as their status could not be determined 
and the species are common no detailed record of them was prepared. 
VIRUS DISEASES 
Virus diseases constitute a serious quarantine problem because, though destruc- 
tive, they cannot be detected, even when present, in most types of plant material 
offered for entry, and even if detected their specific identity could not be deter- 
mined in many cases. Reports were received of heavy losses from virus diseases 
in imported lily bulbs, diseases which could not be detected in the bulbs at the time 
of entry and inspection. 
Mosaic was intercepted in Gloriosa superba from the Virgin Islands and lilies 
from Bermuda : spotted wilt of tomato, was intercepted from Mexico. 
NEMATODE INTERCEPTIONS 
Twenty interceptions of Anguine tritici were made in seed wheat from Afghan- 
istan and three in wheat from Turkey. Apht lenchoidt s hicaudatus was intercepted 
in ginger from China; .4. fragariae in lily-of-the-valley from Germany and lilies 
from Netherlands: .1. limberi in dahlia from Germany A. parietinus in various 
hosts from Azores, Belgium, China, Denmark, Dominican Republic, England, 
France. Germany. Italy. Jamaica. Japan, and Netherlands: Apfub.nchus avenae 
on various hosts from Belgium, Denmark. France. Germany, Italy, Morocco, 
Netherlands, and Union of South Africa: Dilylenchu* <lip*aci in various hosts from 
Denmark, England, France, Germany, Guernsey, Netherlands, Norway, Poland, 
Sweden, and Uruguay: /). irUenru <h'us on yam from Puerto Rico : HeU rodera marioni 
on new or unusual host> for our interception files, including Ad omischus trigynus 
from Germany, Anemone nemorosa and its variety robinsoniana from Canada, 
A. iessiri from Germany. Copy's quinquefolia from Japan. Convolvulus incanus 
from England, Echeveria spp. from Mexico, Hibiscus sp. from Mexico. Lobivia 
gravlicki and L. schuldti from Japan, Mdocactus ma&anzanus from Cuba; Pachy~ 
rhizus erosus from China. Pachysandra terminates and Sarcocca ruscifolia from 
England, and I'rbinia purpusii from Japan; Hexatylus n. sp. in ginger from China; 
Xeotylenchus probably abulbosu* in turnip from Wales: Pratylenchus pratensis in 
lily-of-the-valley from Germany, yam from Jamaica, and potato from Mexico: 
Rotylenchus bradys in yam from Puerto Pico: H. robustus in soil around root-- of 
a century plant from Italy: and Tylen^ mis in Aran ai in from German}. 
COMMON PESTS INTERCEPTED 
Man}' pests commonly found on their hosts in the United State- are intercepted 
more or less frequently. At time- such interceptions have indicated the occurrence 
of some of these pest- in countries from which they had not been reported. Some 
of these common pests intercepted may represent strains differing markedly in host 
reactions from the strains already established here. However, we have no ready 
mean- of determining the possible importance of common pests intercepted aid 
no longer record most of them. It is believed that the interceptions list* d in these 
paragraphs are sufficiently representative oi this type of material. In addition 
to disease^ common in this country, one disease (Elsinot phaseoli) which occurs 
in Puerto Kico but is not know:, to occur in the continental United Suite- lias 
been intercepted so frequently on lima beans from Cuba that it^ interception lias 
been recorded a.- though it were a common pest. 
The two sets of figures in parentheses following each pest name in 
number of countries from which the i cepted and the total number 
of interceptions. 
INSECTS 
Acanthoscelides obteclus (10 398 . Aha 'vena 21- 109), AonidieUa 
auraniii (18—85), Aphis gossypii ■ 1 •"> 297 . .1. rumicis 2( I lea 
ciculatus (16 — 24) , Aspidiotus cameUiae (9- 20) , A. cyanophylli (I] 17 . {.) 
(16—92), .1. lataniac (21 — 169), .1. per* lagona 
(10 — 22), A. rosae (3 — 3), Brevicoryne brassicat (11 pomoneUa 
(17 — S3), Caihartus quadricoUis (4—86), CavarieUa -lphis 
latanine (13 — 61). Ccroplastes floridensis (6- 30), CI 
