60 
BUREAU OF ENTOMOLOGY AND PLANT QUARANTINE [July-Sept.. 
citrus diseases concerned are not likely to occur on any host outside of one 
tribe in this subfamily, viz., the tribe Citrinae. Establishment of an effective 
seed treatment has already led to a modification of this quarantine, effective 
July 1, 1932, whereby the prohibition against the importation of citrus seeds 
was removed, and the present revision now proposes to effect further modifica- 
tion by releasing also from prohibited status all species of the subfamily 
Gitratae except those comprised in the one tribe, Citrinae. The genera thus 
released are: Atalantia, Aegle, Aeglopsis, Balsamocitrus, Chaetospennum 
(Bwmgiea), Chalcas, Clauccna (Clausena) , Clausena, Echinocitrus, Feronia, 
Ferionella, Glycosmis, Ilesperethusa, Lavanga, Limonia (Feronia), Luvunga 
(Lavanga) , Merope, MerriHa, Micromelu, Murraya (Chalcas), Oxanthera, 
Pamburus, Paramignaya, Pleiospermium, Severinia, Swinglea, Triphasia, and 
Wenzelia. 
Both the citrus seeds and the various plant species thus removed from 
Quarantine No. 19 may hereafter be imported under the provisions of Quaran- 
tine No. 37, the Nursery Stock, Plant, and Seed Quarantine. 
Lee A. Strong, 
Chief, Bureau of Entomology and Plant Quarantine. 
NOTICE OF QUARANTINE NO. 19 (REVISED) 
(Approved Aug. 17, 1934 ; effective Sept. 1, 1934) 
The fact has been determined by the Secretary of Agriculture that a dan- 
gerous disease of citrus plants, known as the citrus canker, and also other 
citrus diseases, new to and not heretofore widely prevalent or distributed 
within and throughout the United States, exist in Europe, Asia, Africa, South 
America, North America outside of the United States, and foreign oceanic 
countries and islands, and are coming to the United States with imported 
citrus nursery stock. 
Now, therefore, I, Henry A. Wallace, Secretary of Agriculture, under author- 
ity conferred by the Plant Quarantine Act approved August 20, 1912, as 
amended, do hereby declare that it is necessary, in order to prevent the further 
introduction into the United States of citrus canker and other citrus diseases, 
to forbid the importation into the United States of all citrus nursery stock, 
including buds and scions, from the foreign countries and localities named. 
On and after September 1, 1934, and until further notice, by virtue of said 
act of August 20, 1912, the importation from all foreign localities and countries 
of citrus nursery stock, including buds and ♦scions, except for experimental or 
scientific purposes by the Department of Agriculture, is prohibited. 
The term " citrus " as used herein shall be understood to include only plants 
belonging to the tribe Citrinae, subfamily Citratae, of the family Rutaceae, 
which tribe comprises the following genera : Citropsis, Citrus, Eremocitrus, 
Fortunella, Microcitrus, Monanthocitrus, Pleurocitrus, and Poncirus. 
This notice of quarantine revises and supersedes Notice of Quarantine No. 
19, approved December 10, 1914, effective January 1, 1915, and a modification 
thereof approved June 22, 1932, effective July 1, 1932, and shall become effective 
on and after September 1, 1934. 
Done at the city of Washington this 17th day of August 1934. 
Witness my hand and the seal of the United States Department of 
Agriculture. 
[seal] H. A. Wallace, 
Secretary of Agriculture. 
Instructions to Collectors of Customs 
T. D. 34993, publishing Notice of Quarantine No. 19, prohibiting the im- 
portation OF CITRUS NURSERY STOCK, AS MODIFIED BY T. D. 45795, REVISED (T. D. 
47254) 
Treasury Department, 
Office of the Commissioner of Customs, 
Washington, D. C, September 13, 1934. 
To Collectors of Customs and Others Concerned: 
The appended copy of a revision of Notice of Quarantine No. 19, on account 
of the citrus canker and other citrus diseases, issued by the Secretary of 
