THE CAMPHOR SCALE 19 



LITERATURE CITED 



(1) Bliss, C. I., Cressman, A. W., and Broadbent, B. M. 



1935. PRODUCTIVITY OF THE CAMPHOR SCALE AND BIOLOGY OF ITS EGG AND 



crawler stages. Jour. Agr. Research 50: 243-266, illus. 



(2) Catchings, T. F., and Whitcomb, W. D. 



1924. notes on winter mortality of the three coccids, pseudaonidla. 

 duplex (ckll.), chrysomphalus aonidum (linn.), and chrys- 

 omphalus dictyospermi (morg.), at new orleans, louisiana. 

 (Scientific note) Jour. Bcon. Ent. 17: 604-606. 



(3) COCKERELL, T. D. A. 



1896. PRELIMINARY DIAGNOSIS OF NEW COCCIDAE. Psyche 7 (Sup.) I 



18-20. 



(4) 



1897. THE SAN 'JOSE SCALE AND ITS NEAREST ALLIES. U. S. Dept. Agl\, 



Div. Ent. Bull. 6 (tech. ser.), 31 pp., illus. 



(5) Craw, A. 



1896. A LIST OF SCALE INSECTS FOUND UPON PLANTS ENTERING THE PORT OF 



san francisco. U. S. Dept. Agr., Div. Ent. Bull. 4 (tech. ser.) : 

 40-11. 



(6) 



1896. injurious insect pests found on trees and plants from foreign 

 countries. Calif. State Bel. Hort. Kept. 1895-96: 33-55, illus. 



(7) Cressman, A. W., and Bliss, C. I. 



1935. biology of the camphor scale and a method for predicting the 

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(8) and Dawsey, L. H. 



1934. OIL RETENTION, OIL-EMULSIFIER RATIO, AND OIL-WATER RATIO AS 



affecting the insecticidal efficiency of emulsions. Jour. 

 Agr. Research 49 : 1-19, illus. 



(9) Dawsey, L. H. 



1933. A LABORATORY METHOD FOR DETERMINING APPROXIMATELY THE EVAP- 



ORATION OF PETROLEUM SPRAY OILS UNDER FIELD CONDITIONS. 



(Scientific note) Jour. Econ. Ent. 26: 735-736. 



(10) Essig, E. O., and Baker, C. F. 



1909. host index to californian coccidae. Pomona Jour. Ent. 

 1: [53]-70. 



(11) KUWANA, S. I. 



1902. coccidae (scale insects) of japan. Calif. Acad. Sci, Proc [3], 

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(12) MARLATT, C. L. 



1908. the genus pseud aonidia. Ent. Soc Wash. Proc. (1907) 9: 

 131-141, illus. 



(13) Plank, H. K., and Cressman, A. W. 



1934. SOME PREDATORY HABITS OF THE ORANGE BAGWORM PLATOECETICUS 



gloverii Packard. Calif. Dept. Agr. Monthly Bull. 23 : 207-209, 

 illus. 



(14) Reh, L. 



1904. verbreitung und nahrpflanzen einiger diaspinen. Allg. Ztschr. 

 Ent. 9: 171-178. 



(15) United States Department of Agriculture, Federal Horticultural 



Board. 

 1919. [lists ... of pests collected and reported from april 1, 1919, 

 to june 3 0, 1919, inclusive]. U. S. Dept. Agr., Fed. Hort. Bd. 

 Quart. Letter Inform. 32, 18 pp. 



(16) 



1922. PESTS collected from imported plants and plant products from 



JANUARY 1, 1922, TO DECEMBER 31, 1922, INCLUSIVE. U. S. Dept. 



Agr., Fed. Hort. Bd. Ann. Letter Inform. 36, 38 pp. 



(17) Weigel, C. A., and Sasscer, E. R. 



1923. INSECTS INJURIOUS TO ORNAMENTAL GREENHOUSE PLANTS. U. S. 



Dept. Agr. Farmers' Bull. 1362, 81 pp., illus. (Reprinted, 1932.) 



