107 



$ ad. ad., Hudson River at Cornwall, November 17, 1877, E. A. M. : 

 length, 14-61; stretch, 33-33; wing, 10*18; tail, 4-30; culmen, 1-22; 

 gape, 1-89; tarsus, 1-32; middle toe and claw, 1*44; hallex, '18; claw, 

 12. 



202. Sterna fluviatilis, Naum. COMMON TERN; SEA SWAL- 

 LOW. Only once observed, on Nov. 15, 1874. 



203. Sterna fuliginosa, Gmelin. SOOTY TERN. On Sep- 

 tember 14, 1878, I saw one of these beautiful birds near West Point, 

 from the deck of a little steam yacht. It flew quite near, and I wished 

 for a gun to secure so rare a prize. To my great delight, however, a 

 beautiful specimen was presented to me by Miss Anna B. Warner. It 

 was killed by flying against the boathouse on Constitution Island, on 

 the day previous to that on which I saw my bird. 



Dimensions. Measurements of No. 1772, $ ad., Constitution Isl- 

 and, Hudson River, N. Y., September 13, 1878, E. A. M. : length, 

 17-50; stretch, 34-70; wing, 11-00; tail, 6-60. 



204. Hydro chelidon lariformis, Gmelin. BLACK TERN. The 

 late Frederick S. Osborn shot three of these Terns in the autumn of 

 1874, near Garrisons, on the Hudson. I have seen one of the speci- 

 mens in his collection ; he also informed me that they were shot from 

 a flock of about flfty birds. Mr. Thomas W. Wilson saw two Terns 

 which were supposed to be of this species, about September 11, 

 1879, near Cold Spring. 



Family, PODICIPIDJB. 



205. Podiceps holbolli, Eeinhardt. AMERICAN RED-NECKED 

 GREBE. Quite abundant, at times, in autumn, winter and spring. 



Dimensions. Average measurements of two males: length, 21-55; 

 stretch, 34-58; wing, 7-30; length from tip of bill to end of toes, 

 26-75; culmen, 2-06; tarsus, 2-61; middle toe and claw, 3-00. 



206. Dytes auritus, Linne. HORNED GREBE. A very com- 

 mon spring and fall migrant; occasional in winter. 



Dimensions. Average measurements of four adults : length, 14-30; 

 stretch, 24-38; wing, 5-40; tail, 1-55; culmen, -91; gape, 1-32; tarsus, 

 1-85; middle toe and claw, 200; middle toe alone, 1-70; its claw, 

 31. 



207. Podilymbus podiceps, Linne. PIED-BILL GREBE; DAB- 

 CHICK. Abundant during migrations ; occasional in summer; doubt- 

 less breeds. 



Dimensions. Average measurements of four specimens : length, 

 13-65; stretch, 22-60; wing, 4-95; tail, 1-55; culmen, -86; bill from 

 nostril, '55; gape, 1-38; tarsus, 1-64; middle toe and claw, 2 30; mid- 

 dle toe alone, 2-00. 



