Transcriber’s Note:
The cover image was created by the transcriber and is placed in the public domain.
A
TEXT-BOOK OF ENTOMOLOGY
INCLUDING
THE ANATOMY, PHYSIOLOGY, EMBRYOLOGY AND METAMORPHOSES
OF
INSECTS
FOR USE IN AGRICULTURAL AND TECHNICAL SCHOOLS AND COLLEGES
AS WELL AS BY THE WORKING ENTOMOLOGIST
PREFACE
In preparing this book the author had in mind the wants both ofthe student and the teacher. For the student’s use the more difficultportions, particularly that on the embryology, may be omitted.The work has grown in part out of the writer’s experience in classwork.
In instructing small classes in the anatomy and metamorphosesof insects, it was strongly felt that the mere dissection and drawingof a few types, comprising some of our common insects, were by nomeans sufficient for broad, thorough work. Plainly enough thelaboratory work is all important, being rigidly disciplinary in itsmethods, and affording the foundation for any farther work. Butto this should be added frequent explanations or formal lectures,and the student should be required to do collateral reading in somegeneral work on structural and developmental entomology. Withthis aim in view, the present work has been prepared.
It might be said in explanation of the plan of this book, that thestudents having previously taken a lecture course in the zoölogy ofthe invertebrates, were first instructed in the facts and conclusionsbearing on the relations of insects to other Arthropoda, and moreespecially the anatomy of Peripatus, of the Myriopoda, and of Scolopendrella.Then the structure of Campodea, Machilis, and Lepismawas described, after which a few types of winged insects, beginningwith the locust and ending with the bee, were drawn and dissected;the nymph of the locust, and the larva and pupa of a moth and