102 



resident in towns. Arrives April 10th to 30th; departs the first of 

 September. 



Gemis Petrochelidon Caban. 



65. P. lunifrons Bd. CLIFF SWALLOW. An abundant migrant; 

 May 1st to 10th, and the first of September. Also a common summer 

 resident. 



Genus Hirundo Linn. 



66. H. horreorum Bart. BARN SWALLOW. A very common 

 summer resident; arrives April 15th to May 10th; departs the first of 

 September. 



67. H. tricolor Vieill. WHITE-BELLIED SWALLOW. Common 

 resident. Arrives in large numbers March 20th. The first of May 

 only residents remain. Departs in September. This species still 

 keeps its primitive habit of nesting in deserted woodpecker's holes, 

 hollow stumps and similar places, generally close to some stream or 

 body of water. Several times during the spring. I have seen these 

 birds occupy martin houses for several weeks until the owners re- 



turned, when, after a desperate battle they would leave. Have never 

 observed them about the town during the breeding season. 



Genus Stelgidopteryx Bd. 



68. S. serripennis Baird. HOUGH-WINGED SWALLOW. A rare 

 summer visitant, perhaps breeds. 



Genus Cotyle Boie. 



69. C. riparia Boie. BANK SWALLOW. Abundant summer resi- 

 dent. Arrives May 7th; departs September first. Nests in the sand- 

 hills and clay bluffs along the Lake shore. 



Family VIREONID^J. 

 Genus Vireo Vieill. 



70 V. olivaceus Bonap. KED-KYED VIREO. Common summer 

 resident. Arrives May 15th and departs the last of September and 

 first of October. I have found the iridcs, indifferently, red or brown, 

 in spring specimens of this species. 



71. V. philadelphicus Cass. PHILADELPHIA. VIREO. A common 

 migrnit; May 15th to 25th, and September 5th to 25th. While pass- 

 ing in the spring these birds frequent either willow thickets or high 

 woods. They were so numerous near YVaukegan about the 20th of 

 May, 187fi, that a dozen specimens might have been obtained in an 

 hour. The first of July, 1874, I found two pairs of these birds in a 



