8 THE CANADIAN ENTOMOLOGIST. 



C. D, Zimmerman, so the moth does appear from early summer until 

 autumn. Mr. A. S. Fuller (Am. Ent. vol. i, N. S., page ii) believes that 

 " the grubs go a much greater distance from their burrows before passing 

 into pupa state than is generally supposed." This from the fact that he 

 found " at various times during the summer in almond trees larvae of all 

 sizes and no pupae." I have rarely found their cocoons at any distance 

 from their burrows, frequently in them covered with gum or bark. From 

 observations on other species it appears that larvae apparently full grown 

 at midsummer may hybernate without changing. 



Pyri is a rare form here, so far as ascertained after search and inquiry. 



Trochilium denudatwn Harris is also rare ; June 9th last I found one 

 pupa skin, presumably of this species, protruding from an ash shade tree 

 in this city, but no further evidence of its presence could be obtained. I 

 have one moth taken here tune 13th, which is doubtfully referred to this 

 species. 



NOTES ON COCCID^. 



BY J. HENRY COMSTOCK, WASHINGTON, D. C. 



There occurs in certain orange groves in southern California a species 

 of Aspidioii/s which infests the bark, leaves and fruit of the orange and 

 which from the extent of its ravages has created great alarm. This insect 

 is popularly known by the fruit growers of that section as the red scale, 

 although this name does not well describe its color. This species as yet 

 occurs in only a few fef the Californian orange groves, but is more to be 

 feared than any other scale insect. I have conclusive evidence that it 

 was introduced into that State from Australia. It is, I believe, as yet 

 undescribed, and I offer the following diagnosis : 



AspiDiOTUS ciTRi, n. sp. Scale of the female. — The scale of the 

 female in outline is much flattened, varying in color from a light brownish 

 gray to a bright reddish brown. In fresh specimens there is a white 

 nipple-like prominence which is nearly central and is the remains of a tuft 

 of cottony excretion, beneath which the first larval skin was shed ; sur- 

 rounding this and occupying one third of the diameter of the scale is a 



