OENITHOLOGICAL EXPLORATIONS. 



List of specimens obtained. 



85 



No. 92898. — Iris very dark brown. Bill black. Feet blackish red. Diameter of largest egg in 

 ovary 5™'". Very fat. 



No. 92899. — Iris dark brown. Bill black, with a reddish tinge shining through in front of the nostrils, 

 on the gonys at base of upper mandible, and at The angle of the mouth ; the extreme tip whitish. Feet 

 dark reddish brown. Eggs in the ovary, swollen, but small. Lean. 



As already stated in my preliminary report, the KamtscliatkaD Tern 

 occnrs on Bering Island, but I was wrong in giving- it as breeding there. 

 The four pairs of terns stated to have bred there I found" out the next 

 year to belong to the following species {S. paradiscea Brunn). 



In Kamtschatka I met this species in the middle of May, 1883, at the 

 mouths of the rivers falling into the Bay of Avatscha, but they were 

 not very numerous. During my visit in the autumn I saw but once a 

 large flock, about the first of October, in the Eakovaja Guba, Avatscha 

 Bay. 



Since the above was written Capt. E. I. Hunter had the kindness to 

 send me two birds of the year, collected at Petropaulski. The struc- 

 tural differences pointed out above will serve equally well for distinguish- 

 ing the young. The measurements are embodied in the table above. 



24. Sterna paradisaea Brunn. 



1764. — Sterna paradisaa Brunn., Oru. Bor., i>. 46 {nee Keys. & Blas., 1840 quso doug- 



aZZi;.— Turner, Auk, 18^5, p. 158. 

 1819. — Sterna macrura NaUmann, Isis 1819 (p. 1847). — Dall & Bannist., Tr. Chic. 



Acad. I. 18C9, p.:J06.— DALL,Avif.AJeiit.Isl.Uualascli. eastw.,p. 10(1873).— 



Id., Avif. Aleut. Isl. west Unalascli., p. 9 (1874). — Nelson, Cruise Corwin, 



p. 109 (1883). 

 1820. — Sterna arctica Temm., Mau. d' Orn., 2 ed., I., p. 742.— Palmen, Spec. Cat. Swed. 



Lond. Fish. Exhib., Is83, p. 202. 

 1883. — Sterna lonrppennis Stejneger, Pr. U. S. Nat. Mas., 1883, p. 70 {part, nee Nordm.). 



The Arctic Tern occurs and breeds in small number on Bering Island. 

 In 1882 only four i^airs were observed. They breed at the great lake a 

 few miles to the east of the village. 



