VO i889. 11 '] PROCEEDINGS OF THE NATIONAL MUSEUM. 87 

 Meusurae avis adultae in Museo Acadeinico servatae. 



A rostii apice ad caudae apicem 39" 



ad frontem 3" f}'" 



ad oris angulum 4" $"' 



A frouti ad caudae basin 27" 10'" 



dorsi initium , 14" 7" 



Ab alarum angnlo humeali ad remigutn apicem 13" '.'>"' 



Caudae longitude... ....^ ?" 5'" 



Tarsi lotigittido ^ ; 2" 6'" 



Longitudo digiti interui ad unguis basin t 1" 3'" 



secundi 2" V" 



tertii 3" V" 



quarti seu externi i; . ., 4" 2"'' 



i have thought it useful to tabulate the measurements given by the 

 various describers reduced to millimeters : 



I have already stated that no bones of this species have been preserved 

 in museums until I was so fortunate as to find a few fragments evidently 

 belonging to this bird. These Mr. Frederic A. Lucas has kindly under- 

 taken to describe and illustrate in the second part of this paper. 



The conditions under which they were found I have already described 

 elsewhere (Deutsche Geograph., Bla'tte viii, p. 272), but a brief account 

 may not be out of place in the present connection. 



During my circumnavigation of Bering Island I lauded on September 

 1, 1882, at Pestshanij Mys near the northwestern extremity of the island. 

 Ascending the steep coast escarpment which is here about 35 feet bigh, 

 I found near the edge of the terrasse a rather extensive deposit of bones 

 of various mammals and birds arranged in thin layers of sand and sod 

 alternating. The average thickness of the deposit was about 2 feet, 

 and the present area covered in the neighborhood of 000 square feet, 

 though it was evident that it was formerly of much greater extent, the 

 ocean having encroached upon the laud and carried away great portions 

 of the terrasse. The bones were in fairly good condition, some of the 

 smaller and more delicate ones even excellently well preserved, and none 

 of them showed signs of violence. There were bones of the Arctic Fox, 

 the Sea-otter, the Sea Lion, and other species of seals, as well as various 



