THE CANADIAN ENTOMOLOGIST. 139 



BOOK NOTICES. 



United States Geological Survey of the Territories, Vol. x. Mono- 

 graph of the Geometric! Moths, by A. S. Packard. 



Through the kind recommendation of Dr. Packard, we have been 

 favored with a copy of the above work from the " Department of the 

 Interior," at Washington. It is a quarto volume of over 600 pages, with 

 13 beautiful plates, 6 of which are devoted to delineations of the wing 

 structure of the different families, 1 to the various forms of thorax, &c, 

 and 6 to representations of the insects in their larval and perfect forms. 

 Some idea of the work on these beautiful plates may be formed when it is 

 stated that these latter six plates contain figures of 377 species of Geo- 

 metrid Moths, besides 66 figures of the larvre and chrysalids. 



The plates illustrating the venation and external anatomy have been 

 drawn by Mr. S. E. Cassino and Dr. Packard — the moths by Mr. L. Trou- 

 velot, of Cambridge, Mass. They are all well executed, but Mr. 

 Trouvelot's work is especially worthy of praise. The many and minute 

 points of difference between the various species are faithfully given, so 

 that the student, with the help of the excellent written descriptions in the 

 text by Dr. Packard, will have little difficulty in determining the species 

 in his possession. 



This work is a most valuable contribution to our Entomological 

 literature, bringing together all that is known up to the present time in 

 relation to the Geometrids inhabiting this country north of the southern 

 boundary of the United States, including British America, Arctic America 

 and Greenland. It will give a great stimulus to the further study of this 

 most interesting family of moths. The careful work of years of patient 

 labor and research is evident throughout its pages, and we sincerely hope 

 that its talented author may be spared many years to continue the work 

 thus so well and thoroughly begun. This volume is beautifully got up — 

 the paper and typography excellent, reflecting great credit on the depart- 

 ment from whence it is issued, and on the United States government for 

 their enlightened and liberal policy in thus placing in the hands of the 

 scientific student, as well as that of the general public, the material accu- 

 mulated by the untiring industry of the busy workers of the past, and 

 diffusing a knowledge throughout the country in reference to these matters 

 which could not otherwise have been accessible. 



We tender our cordial thanks to Dr. Packard for his kind remembrance 

 of us. 



