APPENDIX: 



895 



COTTES KEY, 1884. UNION LIST, 1886. 



871 his. Add: TJria gryUe mandti. Mandt's Guillemot. Similar to the last, and 

 probably only the perfected plumage of it, having the white on both sides of the wing pure 

 and unbroken ; the bill said to be smaller. A circumpolar range is ascribed to this form, 

 which is said to come south in winter as far as New Jersey and Norton Sound, Alaska. 



872. Uria columba. 29. Cejiphus columba, 



873. carbo. f3. carbo. 



t2. motzfeldi. 



873 iis. Add: Uria carbo motzfeldi. Motzfeld's Guillemot. Like the last, but 

 lacking the whitish patch on the side of the head. North Atlantic ; Greenland. 



874. Lomvia troile 



875. troile califomica. 



876. arra. 



876 bis. [See Key, p. 818.] 



877 Utamania torda. 

 878. Alca impennis. 



30. Uria troile. 



30a. troile califoi'nica. 



31a. lomvia arra. 



31. lomvia. 



32. Alca torda. 



33. Flautus impennis. 



