OCT., 1900.] 



BIRDS OF THE YUKON REGION. 87 



134. Passerella iliaca. Fox Sparrow. 



A wave of sparrows occured at Circle August 19 just after a frosty 

 night, and among other species I saw a single fox sparrow. The bird 

 was too close to leave identification doubtful. 



135. Passerella iliaca townsendi.^ Townsend Fox Sparrow. 



Osgood saw one at Skagwaj^ and we noticed several at Glacier which 

 were exceedingly shy. Osgood collected two at Glacier June 8-9, one 

 of which was too badly shot to preserve; the other Mr. Ridgway 

 pronounces somewhat nearer this form than amiectens. 



136. Petrochelidon lunifrons. Cliff Swallow. 



This species was common at Log Cabin June 15 and 20. At Cari- 

 bou Crossing we saw a few June 29, probably members of the small 

 colony breeding on the cliffs of an island in Lake Tagish July 1. We 

 next saw cliff swallows near the Hootaliuqua River July 19, and from 

 this point to a few miles above Dawson, August 1, we frequently met 

 with colonies of varying size, the largest being near White River. 

 Their nests were attached to cliffs bordering the river, except at Fort 

 Selkirk, where they were breeding under the eaves of houses. Full- 

 fledged young were taken July 25, and I think the absence of this spe- 

 cies below Dawson was due to their having already migrated. I was 

 told that both cliff' and bank swallows were exceedingly abundant 

 along the Porcupine. 



137. Hirundo erythrogastra unalaschkensis." Alaska Swallow. 



A few were fl3"ing over the marshes of Chilkat Inlet ,Tune 1; I heard 

 that they were common at White Pass Cit}' June 9, and we saw two 

 about the buildings of White Pass Summit June 10. At Log Cabin 

 they were common on June 14, 15, and 20, and on the last date I took 

 a male. A few were noticed at Bennett June 19-21. I refer all seen 

 to this subspecies, for all had remarkably long tails. The single 

 specimen taken had a length of 7.96 inches, wing 1.68 inches, tail 1.10 

 inches, fork of tail 2.33 inches. The forehead, lower wing-coverts, 

 and abdomen are more highly' colored than eastern skins of H. erythro- 

 gastrci^ and the shafts of the long tail feathers are whitish. 



138. Tachycineta bicolor. Tree Swallow. 



I saw several at Skagway May 31 and June 3, and over the Chilkat 

 marshes June 1. We saw others near Caribou Crossing June 29; one 

 July 6 and a pair July 7 at Lake Marsh; and several at Miles Canyon 

 July 11. A few miles above Fort Selkirk July 25 I saw several enter- 

 ing and leaving an old flicker hole in a dead spruce. 



' Auk, XVII, 30, Jan., 1900. 



2 jigpt Fur-Seal Investigations, 1896-97, pt. 3, 422, 1899. 



