Vol. XXXI 



1914^ J Nichols and Muuphv, (renus Pli(rhetria. 



531 



Below are averaged measurements of six mliles which were actu- 

 ally collected on their nests at South Georgia. Th(> figures estab- 

 lish a standard of size for adult males of the subspecies antarctica. 



PhoBbetria palpebrata auduboni subsp. nov. 



Diomedea fusca, Audubon, Orn. Biogr., V., p. 110, 1839. 

 Type Locality, mouth of the Columbia River, Oregon. 

 Range, west coast of America, north casually to Oregon; l)n'('(ling range 

 unknown. 



This is the most distincti\'e of the races of Pha'hrtria jxiIprJfrafa. 

 The specimen which of necessity becomes the type is No. 2718 

 of the United States National Museum collection, the type of 

 Audubon's Diomedea fu.sca (not of Hilsenberg). This specimen is in 

 a very bad state of preservation, with the head broken off, and the 

 feathers soiled with grease in addition to having undergone the char- 

 acteristic dinnning of improperly prepared, uged specimens. From 

 the color of its i)lumage it might be a.ssigned to the/w.svY/ (Hilsen- 

 berg) group, where, indeed, Mathews (/. e.) and others have in- 

 cluded it. The bill, however, shows that it not only belongs to thc^ 

 species palpebrctfa but to a race of that species which is farthest 

 remo\-ed from Phdhcfrhi fu.sea. The name which Audubon usc<l 

 being pre()ccu])ied by fiiseft of Hilsenberg, we hiwe proposed the 

 name Phdhefria pdlpehrafa (ludiihoiii. 



Since the type is of such limited \iiiue for purposes of comparison, 

 it is fortunate that we have found another si)ecimen in the Museum 

 of Comparative Zoology, No. '.VMY.i collection of E. A. and (). Hangs. 

 The latter bird agrees with the type in its dimensions and a])proxi- 

 mately in the shape of the bill, and also presents what was doubt- 

 less the original coloration of the type. 



