This comprehensive manual was published in 1922 by the United States Bureau of Entomology to aid in the identification of dangerous insects that may be introduced to the United States through international trade. It includes detailed descriptions, color illustrations, and a practical guide to the control and eradication of each species. This book is an essential resource for anyone involved in the importation of goods or the management of invasive species. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.