62 THB bbe-kubpbr's guide ; 



honey-bee. His is called the Elective System, as he used 

 wings, mouth-parts, transformations, in fact, all the organs, 

 the entire structure. He gave us our Family Apidas, our Genus 

 Apis, and, as will be remembered, he described several of the 

 species of this genus. In our study of this great man's work, 

 we constantly marvel at his extensive researches and remark- 

 able talents. L,amarck, of this time, did very admirable work. 

 So, too, did Cuvier, of Napoleon's time, and the learned Dr. 

 .Leach, of England. Since then we have had hosts of workers 

 in this field, and many worthy of not only mention but praise; 

 yet the work has been to rub up and garnish rather than to 

 create. Of late, Mr. F. T. Cresson, of Philadelphia, has given 

 a synopsis of the Hymenoptera of North America, together 

 with a list of the described species. This is one of the many 

 valuable publications of the American Entomological Society. 

 I will close this brief history with a notice of authors who 

 are very serviceable to such as may desire to glean farther of 

 the pleasures of systematic entomology ; only remarking that 

 at the end of the next chapter I shall refer to those who have 

 been particularly serviceable in developing the anatomy and 

 physiology of insects, especially of bees. 



VAI,UABI,B BOOKS FOR THB STUDENT OF BNTOMOI.OGY. 



For mere classification, no work is equal to Westwood on 

 Insects — two volumes. In this the descriptions and illustra- 

 tions are very full and perfect, making it easy to study the 

 families, and even genera, of all the orders. This work and 

 the following are out of print, but can be got with little trouble 

 at second-hand book-stores. Kirby and Spence — " Introduc- 

 tion to Entomology " — is a very complete work. It treats of 

 the classification, structure, habits, general economy of insects, 

 and gives a history of the subject. It is an invaluable work; 

 and a great acquisition to any library. Dr. Packard's " Guide 

 to the Study of Insects " is a valuable work, and being Ameri- 

 can is specially to be recommended. His later " Text-Book of 

 Entomology" is invaluable to the student. " Injurious In- 

 sects " is the title of two valuable books, one by Dr. T. Harris; 

 and the other by Mary Treat. The Reports of Dr, T. Harris, 



