SCALE INSECTS OF IMPORTANCE 323 



Kellogg, V. L. Stanford university's collection of Japanese scale 

 insects. Psyche. 1900. 9 : 144 (San Jose scale probably native of 

 Japan, as it is well distributed over that empire), 



Lochhead, William. San Jose and other scale insects. Ont. dep't 

 agric. Toronto. Mar. 1900. p. 1-48 (general account with brief 

 notices of other destructive scale insects). 



Lyman, H. H. President's annual address. Ent. soc. of Ont. 

 30th rep't, 1899. 1900. p. 26-27 (resume of situation in Canada). 



Reh, L. Scale insects on American fruit imported into Germany. 

 [English abstract] U. S. dep't agric. div. ent. Bui. 22, n. s, 1900. 

 p. 79-83 (mature females render importation very possible). 



Wiley, H. S. Fumigation of nursery stock. Rural New Yorker. 

 1900. 59 : 235 (demand for fumigation). 



Willard, S. D. San Jose scale legislation. Western N. Y. hortic. 

 soc. Proc. 1899. p. 125-27 (rep't of committee, discussion); San 

 Jose scale. 1900. p. 90-96 (report of committee on legislation followed 

 by an extended discussion). 



Woodward, J. S. Why oppose the San Jose scale law ? Rural 

 New Yorker. 1900. 59:183 (urges support of proposed fumigation 

 amendment) ; Conference on the San Jose scale. Ent. soc. of 

 Ont. 30th rep't, 1899. 1900. p. 3-20, 57 (details of a conference 

 held at London (Ont.) Oct. 11, in which a number of entomologists and 

 other interested persons took part). 



European fruit scale insect 



Aspidiotus ostreaeformis Curtis 



PLATE 4 



This species has been in New York state probably much longer than 

 the pernicious, or San Jose scale and yet it is a comparatively imknown 

 I insect to farmers and fruit-growers. This form was first received at the 

 United States department of agriculture in 1895 from Dr Peter Collier, 

 then director of the experiment station at Geneva. It was erroneously re- 

 ferred to one of the allied species, no one at' the time suspecting its foreign 

 origin. The systematic inspection of nurseries in the state, begun in 

 1898, resulted in finding much more of this scale insect. G. G. 

 Atwood, then of Geneva, and a nursery inspector, had the fullest oppor- 



