358 GEOLOGICAL SURVEY OF CANADA. 
probably refer to this form; our only specimen is one from Indian 
Head, Sask. 
Most of the specimens taken by us in southwestern Saskatchewan 
were this form. None of the western form were taken and pro- 
bably the bird taken June 5th and referred to virginianus was 
migrating. (A. C. Bent.) 
FaMILy XXXVI. MICROPODIDA. Swirts. 
CLXXVIII. CYPSELOIDES Srrevsev. 1848. 
422. Black Swift. 
Cypseloides niger borealis (KENNERLY) DREW. 1885. 
Sumas, British Columbia. (Lord.) A migrant in British Col- 
umbia. (Fannin.) Abundant summer resident. (Brooks.) Ob- 
served a number at Chilliwack, B.C., June 2nd, 1902; seen at Agas- 
siz, B.C., May 19th, 1889; in great numbers at Douglas, B.C.; not 
uncommon in the Skagit valley, B.C., saw four at an altitude of 
6,000 feet, July 31st, 1905; first seen at Comox, Vancouver island, 
June 15th, 1893, also at Nanaimo; only seen for a few days during 
migration. (Spreadborough.) 
First seen at Lulu island May 25th, and more seen on the 26th, 
migrating leisurely. Frequently seen in great flocks on the Thomp- 
son and over the lakes near Ashcroft. On the 7th of June, my 
notes report ‘2,000 hovering low about a small lake,” the only 
chance I had to secure specimens. They remained there all that 
day, but were gone the next day. Occasional flocks appeared at 
Clinton, Lac la Hache, Ashcroft and Kamloops until June 12th. 
They were again seen at Vernon, June 22nd. At no time did they 
appear singly or in detached pairs. (Ihoads.) 
CLXXIX. CHASTURA STEPHENS. 1825. 
423. Chimney Swift. 
Chetura pelagica (LINN.) STEPH. 1825. 
One shot in 1863 near Sukkertop, Greenland. (Arct. Man.) 
Apparently rare in Newfoundland, at least at Cow Head. (Reeks.) 
An abundant summer resident in Nova Scotia. (Downs; Tujts.) 
