In this seminal work, William Harris Ashmead introduces readers to the world of cynipidous galls and gall-wasps. Ashmead provides a comprehensive catalogue of the different types of galls and wasps found in the United States, as well as detailed information on their anatomy and life cycle. This book is a must-read for anyone in the field of entomology, or anyone interested in the fascinating world of insects.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.