OF EASTERN PENNSYLVANIA. 153 



Its food consists principally of coleopterous and 

 lepidopterous larvae, although other kinds are 

 devoured when there is a scarcity of its favorite 

 diet. At first, it subsists upon beetles. Among 

 which may be mentioned Mycetochares basillaris, 

 Isomira scricca, Donacia metallica, D. conflucns, 

 Platynus cupripcnnis, Harpalus pcnsylvanicus, H. 

 compar, Scaritcs subtcrraiicus, Chrysomela cccrulci- 

 pcnnis and C. spircca; Formica sanguinca, F. sub- 

 termnca, Selandria roscu, Apis mcllifica, Megachile 

 ccntuncularis, among hymenoptera; SyrpJnis ob~ 

 scnrus, Cnlcx t.cniorJiyncJius, Tabanus lincola, 

 Scatophaga furcata and Mnsca domcstica, among 

 diptera; besides small spiders, earthworms, 

 aphides, and the common species of Jnlns. 

 Later, the larvae of different lepidoptera are eaten 

 in great numbers. Some of these are Harrisina 

 Americana, Anisopteryx vcrnata, UtctJicisa bclla, 

 Gortyna zoo 1 , and mature -forms of Spilosoma Vir- 

 ginica, Orgya Icucostigma, Penthina pomonclla, 

 Acronycla obliiiita, and numerous Noctuids and 

 Tortricids. During the past season, the Maryland 

 Yellow Throat has been a common visitant to low, 

 marshy grounds, where it may be frequently 

 observed perched upon a tussock of grass, on the 

 alert for small insects; occasionally, small, shallow 

 pools on account of the aquatic insects which 

 swarm in such localities, are chosen. 



The song of this bird is a lively and pleasing- 

 refrain, easily recognized, and exhibiting at times 

 marked variety. It resembles very closely that 



