OF EASTERN PENNSYLVANIA. 



173 



able agility, assuming a variety of attitudes; min- 

 gles among the leaves, and anon darts forward 

 with unerring precision, seizing an unfortunate 

 insect which has unwittingly strayed across its line 

 of vision. 



In the procurement of food it is as often Jound 

 upon the uppermost branches of tall trees, as upon 

 the nethermost, or small bushes. It is not strictly 

 arboreal, having been found by us feeding upon 

 fallow ground. At first it destroys immense num- 

 bers of beetles which afford it a rich nourishment; 

 



but its appetite soon cloys of such food, and clip- 

 tera, aphides, and lepidoptera in their larval and 

 perfect stages, constitute a happy exchange. We 

 have detected the remains of Rhynchcenus pini, 

 Boslrichus pini, Cralonychus cinereus, C. pcrtinax, 

 PlatyniLs cupripennis, Plarpalus compar, Donacia 

 confluenta, Chrysoniela cceruleipennis, among cole- 

 op tera; Formica sanguinea, F. subterranca, Apis 

 mellifica> Selandria rosce, S. viii, Megachile centun- 

 cularis, several Halicti and Andrence, among 

 hymenoptera ; Musca domestica, Syrpkus obscurus, 

 Culcx tceniorkynchiiS) Stomoxys calcitrans, Tabanus 

 lincola, Tipula ferruginea, among diptera; Aphis 

 roses, A. mali, and other Aphidce, the small spiders 

 that infest the bark, leaves, and flowers of plants ; 

 Ttgenaria domestica, Epeira diadema, and mature 

 forms of the lepidoptera Harrisina Americana, 

 Lithosia miniala, Spilosoma Virginica, Penthina 

 ponwnella, Orgya leucostigma, many of the Noc- 

 tuidce, Tortricidcc, Lyc&nida, and Tincidce, with the 



