16 CIRCULAR 920, U. S. DEPT. OF AGRICULTURE 
The treatment program consisted of three annual fumigations after the 
last live scale had been seen, supplemented by spring and summer oil sprays. 
By the spring of 1952 this program had been completed on properties con- 
taining about 22,000 host plants. Live scales were found in only two 
orchards after the first fumigation, and in none after the second. After 
completion of the treatment program, previously infested properties were 
repeatedly reinspected. 
EPR A TOR Be Clans 
C1) Arcnancgxskaya, A. D. 
1937. THE COCCIDAE OF MIDDLE asia. Ukraine Sci. Com. SSR. Pub., Tashkent, p. 78. 
(2) BopEenuemeR, F. S. 
1943. A FIRST SURVEY OF THE COCCOIDEA OF IRAQ. Iraq Min. Econ. Bul. 28: 8-9. 
1944. ADDITIONS TO THE COCCOIDEA OF IRAQ, WITH A DESCRIPTION OF TWO NEW SPECIES. 
Soc. Fouad 1e d’Ent. Bul. 28: 82. 
(4) Borcusentus, N.S. 
1950. MEALYBUGS AND SCALE INSECTS OF U. S.S. R. Akad. Nauk. USSR, Inst. Zool. 32: 
188. 
(5) Furron, Rosert A., Buspey, R. L., and Yust, Harorp R. 
1941. THE BEHAVIOR OF HYDROCYANIC ACID GAS UNDER A FUMIGATION TENT. Jour. Econ. 
Ent. 34: 777-783. 
(6) , and Netson, Howarp D. 
1946. USE OF THE BLOWER APPLICATOR IN FUMIGATION. Calif. Citrograph 31: 154, 166- 
167. 
7) , and Netson, Howarp D. 
1946. REMOVAL OF HCN FROM GASTIGHT TENTS. Calif. Citrograph 32: 30-31. 
(8) Green, E. Ernest. 
1923. ON A NEW SPECIES OF COCCOMYTILUS FROM EGyPT. Egypt Min. Agr., Tech. and Sci. 
Ser. Bul. 36:63. 
(9) Koroneos, J. 
1934. Les Coccidae de la Grece I, p. 79. 
(10) Macxig, D. B. 
1935. PROGRESS IN INSECT ERADICATION PROGRAMS IN CALIFORNIA. In Proceedings of the 
Seventeenth Annual Conference, Western Plant Board. Calif. Dept. Agr. Spec. 
Pub. 137, p. 41. 
G1) 
1935. ENTOMOLOGICAL SERVICE. Calif. Dept. Agr. Monthly Bul. 24: 405. 
(12) Quaytez, Henry J. 
1938. INSECTS OF CITRUS AND OTHER SUBTROPICAL FRUITS. 583 pp. Ithaca, N. Y. 
(13) Yusr, Harorp R. 
1950. PROPELLER-BLOWER APPLICATOR FOR FUMIGATION WITH HypDRocyANic acip. U.S. 
Bur. Ent. and Plant Quar. ET—286, 3 pp., illus. 
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