116 THE CANADIAN ENTOMOLOGIRT. 



fication of the Coleoptera. More than twenty years have passed since 

 the last edition was issued, and during that time no branch of natural 

 science has made more substantial and rapid progress than this department 

 of Entomology. The number of zealous workers in the field has greatly 

 increased, and the accumulated stores of collectors have been subjected to 

 close examination and critical study, chiefly by the distinguished authors 

 of this work, and the results have added to our list of genera and largely 

 to our list of species, which now includes more than ii,ooo in all. 



In the introduction the external organization of the Coleoptera is fully 

 treated of, aided by illustrations and followed by a useful series of tables 

 of the various orders. The whole of the classification has been revised 

 and brought into harmony with the present advanced condition of know- 

 ledge on this subject. The work is very complete and bears evidence of 

 the vast amount of labor and erudition bestowed on it. Collectors every- 

 where will find it a most valuable guide in their studies and in the arrange- 

 ment of their collections. 



The Pine Moth of Nantucket, Retinia frustrana ; by Samuel H. 

 Scudder. Crown 8vo., 24 pages, with one colored plate. Pubhshcd by 

 the Massachusetts Society for the Promotion of Agriculture, 1883. 



We tender the author our sincere thanks for this excellent paper, con- 

 taining the life history of this new enemy to pine trees, to which is 

 appended a brief account of other native species of Rdinia. The 

 pamphlet is well gotten up, and the colored plate a chromo-lithograph 

 beautifully executed. It represents the insect in its various stages along 

 with the tips of the injured branches. 



Report of the Commissioner of Agriculture, of Washington, for 1881 

 and 1882; Bvo. 



W^e have been favored with a copy of the full report by the Commis- 

 sioner, and have also received separate reports from the Entomologists, 

 Prof. C. V. Riley and Prof. J. PI. Comstock. The .full report forms a large 

 octavo volume of 703 pages, and is illustrated with a number of plates 

 and diagrams. The report of the Botanist on grasses suitable for Texas, 

 has 25 plates; that of the Veterinary division on Swine Plague, Fowl 

 Cholera, and Southern Cattle Fever, 1 2 plates. The report of the Chemist 

 contains the results of an extended series of experiments on varieties of 



