THE CANADIAN ENTOMOLOGIST * 107 



BOOK NOTICES. 



Plant Materials of Decorative Gardening — The Woody 

 Plants, by William Trelease, Professor of Botany in the Univer- 

 sity of Illinois. Urbana. Published by the Author 1917, $1.00 

 postpaid. 



A good entomologist is necessarily more or less of a botanist. 

 If he has not studied botany he is hampered in his work by his in- 

 ability to name the food plants of his entomological captures. 

 The modern entomology necessitates ecological study Doctor 

 Trelease has prepared a little handbook under the title given 

 above, which is inexpensive and of a size to readily fit the pocket, 

 and which, nevertheless, includes, within its flexible covers more 

 than two hundred pages of condensed information which will ap- 

 parently make it possible for any careful observer to learn the 

 generic and usually the specific name of any hardy tree, shrub, or 

 woody climber that he is likely to find cultivated in the Eastern 

 United States (not in the extreme South) or in Northern Europe. 

 Of course, on the more pretentious estates, or in nurseries or bot- 

 anical establishments, introdu(j:ed -forms will be found which are 

 not included in this book; but it indicates 247 genera and 782 

 species, with some 375 minor forms, or over 1,150 distinct kinds 

 belonging to 83 natural families. The author, in his introduction, 

 states that for a few hopelessly complicated genera, such as the 

 haws, the cotoneasters, mockoranges and roses, only a few of the 

 most easily recognized species have been admitted. Except for 

 these, an effort has been made to include all but the newer species ; 

 and, by way of compensation for omissions, the common trees and 

 shrubs of the orchard may be traced to their species, and also the 

 commoner native shrubs and cover plants. 



I have not tried to use this book in the field, but I am struck 

 with the choice of easily observed characteristics of differentiation 

 and with the full glossary. It is a book which every field ento- 

 mologist should possess. L. O. Howard. 



A Preliminary List of the Insects of the Province of 

 Quebec, Part III — Coleoptera. By G. Chagnon, Montreal. Pub- 

 lished as a supplement to Report of the Quebec Society for the 

 Protection of Plants 1917. 



