236 EXPLANATION OF PLATES. 
PLATE 29. 
Upper: Young Xantus’s murrelet, recently hatched. 
Lower. Nest and eggs of Xantus’s murrelet. Both photographs presented by 
Mr. Donald R. Dickey. 
Pate 30. 
Upper :Nesting 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. 
PLatTE 81. 
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. 
Prats 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. 
Prats 35. 
Breeding colony of California murres, referred to on page 184, a photograph 
presented by Mr. William L. Finley. 
Pate 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. 
Prats 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. 
Prats 39. 
Upper: Breeding colony of Pallas’s murres, July 4, 1911, referred to on 
page 197. 
Lower: Eggs in above colony. 
