PAGE 

 Family Laridce — (Continued). 



273 The Glaucous-winged Gull, Lams glaucescens 1366 



274 The Western Gulls, Lams occidentalis 1376 



275 The Herring Gull, Larus argentatus argentatus J 394 



276 The California Gull, Larus californicus 1398 



277 The Ring-billed Gull, Larus delawarensis 1413 



278 The Short-billed Gull, Larus canus brachyrhynchus 141 8 



279 The Franklin Gull, Chroicocephalus franklini 1420 



280 The Bonaparte Gull, Chroicocephalus Philadelphia 1422 



281 The Heermann Gull, Blasipus heermanni 1428 



282 The Sabine Gull, Xema sabini H33 



Family Stemidce — Terns. 



283 The Caspian Tern, Hydroprogne caspia H35 



284 The Royal Tern, Thalasseus maximus 1439 



285 The Elegant Tern, Thalasseus elegans 1441 



286 The Forster Tern, Sterna j or steri 1443 



287 . The Common Tern, Sterna hirundo 144$ 



288 The Arctic Tern, Sterna paradiscea H5° 



289 The Least Tern, Sternitla antillarum browni 1453 



290 The Black Tern, Chlidonias nigra surinamensis 1460 



Order Alciformes — Auk-like Birds. 

 Family Mthiidtz — Auklets. 



291 The Cassin Auklet, Ptychoramphus aleuticus 1467 



292 The Paroquet Auklet, Phaleris psittacula 1474 



Family Cepphidce — Guillemots. 



293 The Pigeon Guillemot, Cepphus columba 1475 



Family Brachyramphidce — Murrelets. 



294 The Ancient Murrelet, Synthliboramphus antiquus 1481 



295 The Marbled Murrelet, Brachyramphus marmoratus l A%A 



296 The Xantus Murrelet, Endomychura hypoleuca 1489 



Family Alcidce — Auks, Murres. 



297 The California Murre, Uria troille californica 1494 



