AUTHOR'S PEEFACE. 



In this volume, I have endeavored to explain in simple 

 Japanese and English languages, all the specimens of Japanese 

 Sphingidae, which are contained in the collection of the Nawa 

 Entomological Laboratory. In order to avoid complicated de- 

 scriptions, I have introduced a large number of original colored 

 plates. I regret, however, that although I have done my best 

 to secure perfection, yet owing to the fact that the art of litho- 

 graphy in this country is still in an undeveloped stage, these 



plates are far from being satisfactory. 



My best thanks are due to Mr. Y. JSTawa, Mr. C. 



Rothschild and other gentlemen for their kind assistance in 



the preparation of this little work. 



K. Nagano. 



Tokyo, September, 1904. 



