BUTTERFLIES AND MOTHS. 337 



2. Some transparent-winged species, such as Cratsegi, cannot be 

 printed. 



3. Certain species, especially in the genus Lycsena, lose their brilliancy 

 (but on the upper side only) by having the scales reversed as they are in 

 the nature-printing process. Other species, however, print so well that 

 it is not possible to tell the copy from the original. 



4. It takes rather longer to nature-print a Butterfly than to set it in 

 the ordinary way. 



A book on Nature-printing has been published. 

 None of the methods explained in this work are per- 

 fectly satisfactory. Doubtless many improvements 

 will be discovered when naturalists turn their attention 

 to this matter. 



So rich is the insect fauna of this region that 

 the Butterflies (Rhopalocera) are by no means per- 

 fectly known. The late M. Milliere, of Cannes, did 

 excellent work in his own district. But a great deal 

 remains to be done. As regards the Moths (Hetero- 

 cera), we are still further from a complete knowledge. 

 New species are constantly discovered. M. Wagner, 

 a music master, has lately found a new Burnet 

 (Zygwna) on the Mt. Chauve, that is, within a walk of 

 Nice. There are spots near the coast as yet quite un- 

 explored from an entomological point of view. Any 

 beginner who puts a light in his window at nightfall 

 will catch moths which no lepidopterist in Europe, 

 not even Dr. Staudinger, can name. 



In this chapter, and in previous ones, I have men- 

 tioned a good many of the handsomest insects. A 

 few more may be added. The Eleven-line Podalirius 

 ( Undedmlineata] occurs near Nice : my wife found 

 the neat, pointed, red-brown pupa on the wall of a 

 cottage, and kept it on the chance of a surprise. A 

 fortunate find ! A rare Thais ( T. Medesicaste) may 



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