48 



THE GUIDE TO NATURE 



FIG. 9. THE BROAD-NECKED TRIONUS. 



trees, or were pests in other ways. 



Out of my large collection of insect 

 photographs taken in this region, I select 

 two for reproduction here, — the one 

 shown in Fig. 7 being the "Spotted Pel- 

 idnota," which often does great damage 

 to the wild and cultivated grape-vines 

 during the summer months ; the other 

 subject (Fig. 9) is the well-known 

 "Broad-necked Prionus," the larva; of 

 wliich feed upon the roots of the grape- 

 vine, and which doubtless is a harmful 

 insect in other ways. 



IVIany of the moths and butteflies of 

 the District are very beautiful, and a dis- 

 play-collection of these, together with 

 other insects, is now being made for one 

 of the exhibition-rooms at the U. S. Na- 

 tional ]^Iuseum. This is very convenient 

 for study, and of great assistance to 

 those interested in this particular and 

 important branch of zoology. 



FIG. 10. A BEAUTIFUL BUNCH OF "BLUETS.' 



