236 EXPLANATION OF PLATES. 



Plate 29. 



Upper : Young Xantus's murrelet, recently hatched. 



Ix)\ver. Nest and eggs of Xantus's murrelet. Both photographs presented by 

 Mr. Donald R. Dickey. 



Plate 30. 



Upper cNesting 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 cliffs, July 24, 1915, referred 

 to on page 177. 



Plate 35. 



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

 pre.sented by Mr. William L. Finley. 



Plate 36. 



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



page 185. 

 I^ower : Part of same colony. 



Plate 37. 



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



Plate 38. 



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



by Mr. Herbert K. Job for the author. 

 Lower: Eggs of Brtinnich'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. 



