OF EASTERN PENNSYLVANIA. 3/7 



the many stomachs which, we have examined: — 

 Thaneroclerus sanguineus, Cratonychus cinereus, 

 Harpalus compar, Cetonia inda, Chrysomela ccbtu- 

 leipennis, Cymindis viridipennis, Selandria rosce, $. 

 vitis, Apis mellifica, Formica sanguinea, and Aphis 

 mali, A. roses, A. cerasi, and A. avence, among 

 hemiptera. Later, and especially during the 

 breeding-season, vast numbers of caterpillars pf 

 Anisopteryx vemata, A. pometaria, Eufitcfiia ri- 

 bearia, Choerodes transversata, Ennomos subsignofia, 

 Hybernia. tiliaria, Zerene catenaria, Lithacodes tes- 

 sellaris, Liinacodes scapha, Clisiocampa Am^Hcana, 

 Orgya leucostigma, Anisota rubicunda, Lozo- 

 tania rosaceana, Eudryas grata, and mature forms 

 of Spilosoma Virginica, Penthina pomonelia, Prpcrs 

 Americana, Lithosia miniata, and many of the 

 LyccenidcE and Tortricidce. 



The flight of the Baltimore Oriole is somewhat 

 loftier than that of the last described species, but 

 in other respects is analogous. It is strictly arbo- 

 ricole, and in only one instance have \\re ever 

 discovered that it has any predilection for a ter- 

 restrial life, and then it was observed gleaning on 

 a piece of ploughed ground. 



The birds begin to mate from the 15th tp the 

 i8th of May; and about the last of the same month, 

 or the beginning of June, looJv about for a S;uitable 

 place in which to hang a nest. The n^st-materials 

 are mainly collected' by the male, while upon the 

 female devolves the duty of weaving the ingre- 

 dients together, which is the labor of a week of 



