21. Ivory Gull. Snow Gull.

_Pagophila alba_ (Gunn.).

One specimen shot at Dease Lake, Cassiar, by James Porter, September,
1889. Another specimen was shot at Okanagan Lake in November, 1897, by
Mr. J. T. Studley, and presented to the Museum. Mr. A. C. Brooks also
reports it from Okanagan.

RISSA Stephens.

22. Pacific Kittiwake.

_Rissa tridactyla pollicaris_ (Ridgw.).

Taken near Discovery Island, January, 1896, by W. Lindley, and at
Queen Charlotte Islands by Dr. C. F. Newcombe, September, 1895.

LARUS Linnaeus.

23. Glaucous-winged Gull.

_Larus glaucesceus_ (Naum.).

An abundant resident on the coast; breeds on some of the islands in
the Gulf of Georgia. Mr. Brooks reports it from Okanagan Lake.

24. Western Gull.