EXPLANATION OF PLATES. 237 



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Plate 40. 



Upper : Pair of Pallas's murres and their egg, July 4, 1911. 

 Lower : Group of nesting Pallas's murres, July 4, 1911. 



Plate 41. 



Upper: Breeding colony of razor-billed auks, June 25, 1904, referred to on 



page 202. 

 Lower : Egg of same in above locality, a photograph presented by Mr. Herbert 



K. Job. 



Plate 42. 



Upper : Flock of dovekies on water. 



Lower: Flock of dovekies on rocks. Both photographs presented by Mr. 



Donald B. MacMillan and published by courtesy of the American Museum 



of Natural History. 



Plate 43. 



Upper : Young dovekie, half-fledged. 



Lower: Dovekies flying over their nesting sites. Both photographs presented 



by Mr. Donald B. MacMillan and published by courtesy of the American 



Museum of Natural History. 



COLOEED PLATES. 



The eggs illustrated in the colored plates were selected from the collection 

 of the United States National Museum, except as otherwise indicated. After the 

 Museum catalogue number of each specimen is given the name of the collector, 

 the locality, and the date as far as known. 



Plate 44. 



1. Western grebe, 21563, Fort Klamath, Oregon, May 28, 1883, C. E. Bendire. 



2. Mexican grebe, 24917, Brownsville, Texas, July 28, 1891, F. B. Armstrong. 



3. Holboell's grebe, 6774, Porcupine River, Alaska, R. Kennicott. 



4. Eared grebe, 33251, Stinking Lake, New Mexico, July 30, 1913, Stokley Ligon. 



5. Pied-billed grebe, 27434, Brownsville, Texas, August 25, 1891, F. B. Armstrong. 



6. Tufted puffin, 28483, Lapush, Washington, June 21, 1897, R. T. Young. 



7. Horned grebe, 6737, Porcupine River, Alaska, R. Kennicott. 



8. Horned puffin, 16730, Saint George Island, Alaska, July 12, 1873, H. W. 



Elliott. 



Plate 45. 



1. Loon, 12951, Saint Croix River, Maine, G. A. Boardman. 



2. Black-throated loon, 2633, Europe, H. Drouet (dealer). 



3. Pacific loon, 9658, Anderson River, Mackenzie, .Tune 29, 1869, R. MacFarlane. 



Plate 46. 



1. Yellow-billed loon, A. C. Bent collection, Point Hope, Alaska, June 22, 1916, 



Rev. A. R. Hoare. 



2. Red-throated loon, 19046, Greenland, Governor Fencker. 



3. Red-throated loon, 12621, Anderson River, Mackenzie, R. MacFarlane. 



