TABLE OF CONTENTS. XITl 
Page. 
- Genus 4. Uria Brisson...... 2.2.2.0... 2. e cece eee e eee eee e eee eeseeenees 717 
Key to the Species and Subspecies of Uria................020.0eeeeeeeeeeees 719 
4, Uria ringvia Briinnich... 2.2.2.2... 2.2.2. e eee cece eee e eee eeees 719 
5. Uria troille troille (Linnseus).............2.2.2 2.220 0c cece eee e eee 721 
6. Uria troille californica (Bryant).........-.2..2-2--0-eeee eee cece eee 724 
7. Uria lomvia lomvia (Linneeus)........2-.2-..22. 222 eee eee eee cece eee 726 
8. Uria lomvia arra (Pallas)... .....2-2..2-22-22e cece eee eee eee eee eens 730 
Genus 5. Cepphus Pallas............0.0. 0. 0c cece cece cece cece eee eneeceeenes 732 
Key to the Species of Cepphus.............0. 2. 2c e cece eee e cece cece eeeeenes 733 
9. Cepphus.grylle (Linneus)i.ssseecceyacrereases usaceeweemneneeeeses 733 
10. Cepphus mandtii (Mandt)....-. 22.22.0220 o eee cece eee ee 737 
11. Cepphus columba Pallas.............2.2202-ee cee eee cece eee ee eeee 740 
12. Cepphus motzfeldi (Benicken)..........-..-..2- 2.20. ee eee eee eee ee 742 
13. Cepphus carbo Pallas. . 7.2... 2.2. e eee ee ee eee eee ee 743 
Genus 6. Brachyramphus Brandt...............0..0020 eee eee eee e eee eee eee 745 
Key to the Species of Brachyramphus.......:..----.--.2--2-0-0eeeeeeeeeeee 746 
14, Brachyramphus marmoratus (Gmelin)....... erie Sickaionecins eee 746 
15. Brachyramphus brevirostris (Vigors).......-....--2-----20-0+eee cress 749 
Genus 7. Endomychura Oberholser.............-...-0-02 20200 cece eee eee ees 751 
Key to the Species of Endomychura.........-.-...-0.--20- ee eee eee ee eeeeee 751 
16. Endomychura hypoleuca (Xantus).........2-.---22--02eeee ee eee eee 752 
17. Endomychura craveri (Salvadori)...............-2-222220-0-2-22e0 eee 753 
Genus 8. Synthliboramphus Brandt................2.2.0-0-02020 eee eee eee ee 755 
Key to the Species of Synthliboramphus ..............--..---2------------- 756 
18. Synthliboramphus antiquus (Gmelin)..............22--022e02e2ee eee 757 
Genus 9. Ptychoramphus Brandt.............2...2.202 220 ee ence eee eee sees 760 
19. Ptychoramphus aleuticus (Pallas)..............-----2--02e2ee eee eee 761 
Genus 10. Phaleris Temminck.............--.2--.-2-2- eee ee cece e eect eeeeee 763 
20. Phaleris psittacula (Pallas)........-..... 0.0022. 2- eee eee eee ee eee eee 764 
Genus 11. Ciceronia Reichenbach...........-.------0-00e eee eee cece eee cerns 767 
21. Ciceronia pusilla (Pallas)..........2..0000ece cece eee e eee eee ec eeeeeeee 768 
Geng, 12', AICOMESS (ON 6: ccectecetae dpe ceuernnamsdanecasem ceca wemiceeswien 770 
22... Alcéllapyempeai( Gmelin) ve eiac sea esie a dud agaesiannieteicietlerele ee ates 771 
Génie. 13; - Atha Merretini i 2crscice ccccen inte wedseoeieeinekshamsteniaanretns 774 
23.-A chia) eristatella (Pal ag) os: sicereissrntediserere lasnoaie iets ie tete tery gvana tears ea tetaauge anges 775 
Genus 14. Cerorhinca Bonaparte...............-20- 2 eee eee eee cee ee eee e eee 778 
24, Cerorhinca monocerata (Pallas)............--..-2-200- eee eee eee eee 779 
Genus: 15. Fratercula Brissovesosasesceducecstwebicus ces ceneseweseecee esis 782 
Key to the Species and Subspecies of Fratercula.............-. aaa oinvaneesliaie/etom 783 
25. Fratercula arctica arctica (Linneeus)..............-.-------- vesteuien 784 
26. Fratercula arctica naumanni Norton..:..........2.22.--20202 eee eee 788 
27. Fratercula corniculata (Naumann)......-....-.2---220- 20 eee eee eee ee 789 
Genus 16. Lunda Pallas..................-. eos Ree wae ce ideandtinelets 792 
28. Lunda cirrhata (Pallas). .cc0cccscssescursewacesecees s¥eee bacee ex oe 793 
MACON Gis, < ooiceis ls s.cid tenes wred siete od ated RAS Eee EER EER eS 797 
