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PS VC HE 
[June- August 
such were found attacking the egg, which are more exposed than the later stages. 
It has been a long accepted fact that none were present, and later writers, 
under such circumstances, may have easily overlooked minute egg-parasites. Its 
anatomy has been well worked up(I,andois, 1868; D’Herculais, 1886; and others.) 
d’he trouble then is, that definitely stated facts are wanting concerning 
much of the life-history of this pest. This has doubtless been caused, partly on 
account of its being so common everywhere, and having an extensive literature, 
thus causing modern writers to believe it at first glance to be well studied, and 
partly because of its odious character and abominable nature. The last cause 
seems to have the most to do with it. 
For those who may want to look fully into the questions suggested, a full 
bibliography of the literature is appended to this paper. This has been made as 
complete as possible, and on account of its length, will follow as part II. It is 
hoped that the list of titles given, will be found very complete and accurate, the 
writer having made it a point to correct the many erroneous references existing 
and to verify those which have been found to be correct. The bibliography will 
be explained, the titles criticised and credit given in their proper places. 
Thanks are here extended to Dr. L. O. Howard, Chief of the Bureau of Ento- 
mology, United States Department of .Agriculture, for permission to publish these 
notes; and for other kindnesses. 
