EXPLANATION OF PLATES. 237 
Priate 40. 
Upper: Pair of Pallas’s murres and their egg, July 4, 1911. 
Lower: Group of nesting Pallas’s murres, July 4, 1911. 
Prats 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. 
Piate 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. 
COLORED 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, ahd the date as far as known. 
Prats 44. 
1. Western grebe, 21563, Fort Klamath, Oregon, May 28, 1883, C. E. Bendire. 
2. Mexican grebe, 24917, Brownsville, Texas, July 28, 1891, I’. B. Armstrong.' - 
3. Holbeell’s grebe, 6774, Porcupine River, Alaska, R. Kennicott. 
4. Eared grebe, 33251, Stinking Lake, New Mexico, July 30, 1918, Stokley Ligon. 
§. Pied-billed grebe, 27434, Brownsville, Texas, August 25, 1891, F. B. Armstrong. 
6. Tufted puffin, 28483, Lapush, Washington, June 21, 1897, R. T. Young. 
%. Horned grebe, 6737, Porcupine River, Alaska, R. Kennicott. 
8. Horned puffin, 16730, Saint George Island, Alaska, July 12, 1873, H. W. 
Elliott. 
Puare 45. 
1. Loon, 12951, Saint Croix River, Maine, G. A. Boardman. 
2. Black-throated loon, 2633, Europe, H. Drouet (dealer). 
8. Pacific loon, 9658, Anderson River, Mackenzie, June 29, 1869, R. MacFarlane. 
Prats 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. 
8. Red-throated loon, 12621, Anderson River, Mackenzie, R. MacFarlane. 
