Appendix. 



499 



Eeferences. 



(1) Newstead, B. ' A Monograph of tlie British Cocciche,' vol. I., p. 175 (1901). 



(2) Newsiead, B. The Injurious Scale Insects and INIealy Bugs of the liritish 



Isles. Journ. Roy. Hort. Soc, XXIII., pt. 3 (1899). 



(3) Fernald, M. E. ' Catalogue of the Coccidas of the World,' p. 234 (1903), 



(4) Fernald, M. E. Canadian Entomologist, vol. XXX., p. 79, and Bulletin 



Bot. Dep. Jamaica, p. 257 (1896). 



(5) Loiinshunj, C. P. Report of the Government Entomologist for the year 



1896, p. 76 (1897). 



THE SAN JOSE SCALE. 



(Aspidiofus perniciosKs. Com.) 



This pest is by far the most pernicious of the many insect enemies 

 fruit-growers sufter from abroad. It was apparently introduced into 



'^^ '^ 



Fir,. :;24.- SA.\ .luSE scale (AsjiKhotu.s- perntclofiKS). 

 On apple. (X S.) 



America from Japan, and it has flourished and spread to an alarming 

 extent. Its native home is China. It was imported into California in 

 1870. It lirst became injuriously abundant three years later at San 

 Jose, hence its popular name. It spread in twelve years throughout all 

 California, Oregon, and into Washington State, and has since gradually 

 extended its range until now we may say it is found in all the States 

 lying south of the great lakes. In Australia it is found in several parts 

 of New South Wales, in Victoria and South Australia. Mr. Froggatt 

 states that it " has been in existence in New South Wales and some of 

 the other Colonies for many years. As far as I can learn it has been 

 looked after and checked, if not stamped out, both in Victoria and South 



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