OF EASTERN PENNSYLVANIA. 283 



the former may be mentioned the seeds, oi Foa 

 tnvialis, T. nemoralis, and Arrhenatherum arena- 

 ceum; and, among the latter, harpalus compar, 

 Casnoma pennsylvanica, Cratonychus cinereus, Culex 

 tesniorhynchus, and various dipterous and coleop- 

 terous beetles that are indigenous to low, aqueous 

 situations. As the season advances, Haltica 

 chalybea, Cymindis viridipennis, Chrysomela cceni- 

 leipennis, among coleoptera; and the larvse on 

 Lvmacodes scapha, Agrotis tessellata, Choerodes 

 transversata, Ennomos subsignaria, Anisopteryx 

 vemata, tlybemia tiliaria, and mature forms of 

 Plusia,Acronycta, and many of the Tortriddce and 

 Tineidcz are devoured and fed to the young. 



Nidification commences ordinarily about the 

 15th of May. A tussock of grass is ordinarily 

 selected for the site of a nest. The latter is 

 placed in a depression in the ground, and is held 

 in position by the surroundhig grasses. It is con- 

 structed almost entirely of dry grasses which are 

 gathered in the vicinity. It is neither so large nor 

 so firmly woven as that of the Song Sparrow. To 

 the labor of building both birds apply themselves 

 with commendable assiduity. On the completion 

 of the nest which requires not more than three 

 days, the female commences oviposition, which 

 proceeds at the rate of one &gg daily for four 

 days, until the complement is deposited. Incuba- 

 tion follows the next day, and continues for a 

 period of II days. We do not think the male 

 takes any part in this essential operation, save to 



