4 EGGS OF NORTH AMERICAN BIRDS. 



20. \^i& A^T AvKiMT, Simorhynchus pusillus. Eggs, 1, oblong 

 oval, somewhat pointed at smaller end, but somewhat variable 

 in form, white; \.l'i-\-\.bb to 1.13 -f- 1-63. Breeds on coast 

 and islands of North Pacific, from Sitka and Japan to Bering's 

 Strait, und6r rocks, the first week in June. 



21. Ancient Muerelet, SynthlihorampJms a7itiquus. 

 Eggs, 2, oval, pale buff, with longitudinal markings of pale 

 gi-ay and brown; 1.45 -f- 2.15 to 1.55 -j- 2.50. Breeds on the 

 coast and islands of North Pacific, from Sitka and Japan, 

 northward, in burrows on the face of banks, early in June. 



22. Temminck's Muerelet, jSynthliboramphics wumizus- 

 vme. Eggs, unknown. Breeds on coast and islands of North 

 Pacific, from Washington Territory and Japan, and northward. 



23. Marbled Muerelet, Brachyramphus marmoratus. 

 Eggs, unknown. Breeds on coast of North Pacific, from Van- 

 couver Island, and northward. 



24. KiTTLiTz's Muerelet, Brachyramphus kittlitzii. Eggs, 

 unknown. Breeds on Kamtschatka and the Aleutian Islands, 

 east to Unalashka. 



25. Xantus's Muerelet, Brachyramphus hypoleucus. 

 Eggs, unknown. Breeds on the coast of Southern California, 

 from San Diego to Cape St. Lucas. 



26. Craveri's Mureelet, Brachyramphus craveri. Eggs, 

 unknown. Breeds on the Island of Natridad, Gulf of Cali- 

 fornia. 



27. Black Guillemot, Cepphus grylle. (Type, Plate II.) 

 Eggs, 3 or 4, oval, white, creamy, or greenish, spotted and 

 blotched irregularly with very dark brown. 



28. Mandt's Guillemot, Cepphus mandtii. Eggs, indis- 

 tinguished from No. 27. Breeds throughout Arctic regions 

 of both continents, south to Labrador, and along the Alaskan 

 coast. 



29. Pigeon Guillemot, Cepphus columba. Eggs, indistin- 

 guishable from those of No. 27. Breeds on coast and islands 

 of Pacific, from California and Japan noilh to Bering's Strait. 



