236 EXPLANATION OF PLATES. 



Plate 29. 



Upper : Young Xantus's mnrrelet, recently hatched. 



Lower. Nest and eggs of Xantus's murrelet. Both photographs presented by- 

 Mr. Donald R. Dickey. 



Plate 30. 



Upper :Nestlng site of black guillemot, July 3, 1904, referred to on page 157. 

 Lower: Young black guillemots, nearly ready to leave the nest, a photograph 

 presented by Mr. Herbert K. Job. 



Plate 31. 



Upper : Nest and eggs of black guillemot, July 3, 1904, referred to on page 158. 

 Lower: Nearer view of same nest. 



Plate 32. 



Upper : Nesting site of pigeon guillemot 



Lower: Nest and eggs of same in same locality. Both photographs presented 

 by Mr. William L. Dawson. 



Plate 33. 



Upper : Breeding colony of murres, June 24, 1904, referred to on page 175. 

 Lower: Eggs In colony shown above. 



Plate 34. 



Upper: Breeding colony of murres and double-crested cormorants, referred to 

 on page 175, a photograph presented by Dr. Charles W. Townsend. 



Lower : Young murre, nearly ready to leave the clifCs, July 24, 1915, referred 

 to on page 177. 



Plate 35. 



Breeding colony of California murres, referred to on page 184, a photograph 

 presented by Mr. William L. FInley. 



Plate 36. 



Upper: Breeding colony of California murres, July 7, 1911, referred to on 



page 185. 

 Lower : Part of same colony. 



Plate 37. 



Young California murres, a photograph presented by Mr. William L. Finley. 



Plate 38. 



Upper: Brflnnich's murres on their eggs, June 25, 1904, from negative taken 



by Mr. Herbert K. Job for the author. 

 Lower: Eggs of Brflnnich's murre, a photograph presented by Mr. Herbert 



K. Job. 



Plate 39. 



Upper: Breeding colony of Pallas's murres, July 4, 1911, referred to on 



page 197. 

 Lower : Eggs In above colony. 



