112 THE EEPORT OF THE No. 36 



families of the Noctuidce Trifince/' A"ol. A'lII. is the second part of the Acro- 

 nyctince; 104 genera are treated of, comprising 730 species. In Vol. VII., 843 

 species belonging to 96 genera are dealt with. The third and final part of the 

 subfamily is prepared and it is expected will be issued very soon. The beautiful 

 coloured plates which accompany each volume of the Catalogue, are of immense 

 service to students. Those which refer to Vols. VII. and VIII., are of the same 

 degree of excellence. Many of the species figured occur in Canada, and are at 

 once recognized. We are glad to see the names of several Canadian collectors in 

 the text, all of whom have sent material for the collection of the British Museum. 

 Sir George Hampson is very grateful for noctuids from Canada, and all who can 

 should assist him as far as possible in his valuable work. 



Hopkins, A. D. The Genus Dendroctonus. (Contributions toward a mono- 

 graph of the Scolytid beetles). United States Department of Agriculture, Bureau 

 of Entomology; Technical Series No. 17, Part 1, issued June 30, 1909. The 

 results of Dr. Hopkins' studies in this important genus will be of much use to 

 coleopterists generally, and of particular interest to the economic entomologist. 

 This first part of the bulletin is one of the best of the many valuable publications 

 of the U. S. Bureau of Entomology. In the introductory chapter it is stated 

 that, "It is the purpose of this paper to revise and bring up to date the available 

 information on the described species, to describe those that appear to be new to 

 science, and to record the results of original investigations relating to the more 

 technical details that can not well be included in the paper which is to follow as 

 a part of a bulletin in the regular series and which will give full information on 

 the bionomic features." Twenty-four species are treated of, seven of which are 

 new to science. 



Smith, John B. Our Insect Friends and Enemies — The Relation of In- 

 sects to man, to other animals, to one another, and to plants, with a chapter on 

 the War Against Insects. Philadelphia and London, J. B. Lippincott Company, 

 1909. This splendid work of 314 pp., by the above recognized authority, is a 

 very welcome addition to the literature of Entomology. Dr. Smith has divided 

 the book into 12 chapters, viz.: (I) Insects in theij Relation to the Animal King- 

 dom; (II.) Insects in their Relation to Plants as Benefactors; (III.) Insects in their 

 Relation to Plants as Destroyers; (IV.) Insects in their Relation to each other; 

 (V.) Insects in Relation to the Animals that feed on them; (VI.) Insects in their 

 Relation to Weather and Diseases that affect them; (VII.) Insects in their Rela- 

 tion to other Animals; (VIII.) Insects in their Relation to Man as Benefactors; 

 (IX.) Insects in their Relation to Man as Carriers of Diseases; (X.) Insects in 

 their Relation to the Household; (XI.) Insects in their Relation to the Farmer and 

 Fruit Grower; (XII.) The War on Insects. 



The book is full of information and will doubtless have a very wide sale. It 

 is illustrated by many figures in the text, and at the beginning there is a full-paged 

 coloured plate of some of the commoner insects which are troublesome in houses. 

 The work is well printed, and we congratulate the author on this latest of his many 

 publications. 



Snodgrass, R. E. The Thorax of Insects and the Articulation of the Wings : 

 Proc. U. S. Nat. Museum, Vol. XXXVI., pp. 511-595; separates published June 

 18, 1909. This paper will be found of much interest to entomologists generally. 

 It represents a good deal of careful work and will no doubt be of much use to stu- 

 dents. The author states that the paper is an attempt to show the unity of thoracic 

 structure that prevails throughout all the orders of insects. Thirty plates ap- 

 pear at the end of the paper and there are, besides, some figures in the text. 



