ON TREES AND BIRDS. 



139 



spiders. Most of the caterpillars belonged to hairy 

 species and many of them were of large size. One 

 stomach contained 250 American tent caterpillars ; an- 

 other 217 fall web worms. In places where tent cater- 

 pillars are abundant, they seem to constitute a large 

 portion of the food of these two birds. The beetles 

 were distributed among several families, but all were 

 more or less harmful to agriculture. In the same 

 stomach which contained the tent caterpillars were two 

 Colorado potato beetles ; in another were three gold- 

 smith beetles and remains of several other large beetles. 

 Besides grasshoppers there were several katydids and 

 tree crickets. The sawflies were in the larval stage, in 

 which they resemble caterpillars. 



YELLOW-BILLED CUCKOO. 



