162 



NATURE-STUD^ REVIEW 



[6:6^Sept.,19lO 



ways a delightful surprise to have these cocoons which one 

 had supposed to be polyphemus yield the lovely Tropaea lima, 

 most beautiful of all the silk-worm moths. No wonder it has 

 been named ''Queen of the Twilight" and "Empress of the 

 Night". The wings are an exquisite pale green, the front 

 ones seemingly bordered with rose-purple velvet, and the body 

 is clothed with delicate white fur. Because it flies only at 

 night, lovely Luna is supposed by many to be as rare as it is 

 beautiful, but it is really one of our common species, having a 

 wide range. 



LUNA CATEIU'ILLAK, 11 1. 1 A' CiUOVVN 



We are indebted to Charles Scribner's Sons for their 

 courtesy in furnishing to us for publication in this number the 

 excellent colored plate of butterflies which 

 Ackiiowledgmeiit serves as frontispiece to Holtz' ''Nature- 

 Study". One of the most marked charac- 

 teristics of recent nature books is the use of illustrations repro- 

 duced from original photographs. When color is added, the 

 attractiveness of the picture is greatly enhanced. Teachers 

 generally are eager to possess such illustrative material, and we 

 are confident that our readers will generally appreciate the favor 

 extended them by these publishers 



