46 . CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



adult and immature birds. Two females measured respect- 

 ively in the flesh 445 and 450 millimeters in length, and 1075 

 and 1095 in extent. 



Males— Wing 343-373 (357) ; tail 133-154 (145) ; culmen 

 40.5-47 (43.9); tarsus 47-54.8 (51.7); middle toe 38.5-45 

 (42). Females— Wing 330-358 (344) ; tail 130-147 (138) ; 

 culmen 37.5-45 (41.4) ; tarsus 45.3-53.5 (49.9) ; middle toe 

 36.5-44.3 (40.3). 



Stercorarius pomatorhinus : Pomarine Jaeger 



Albemarle Island. 



Mr. Beck shot a female Pomarine Jaeger off northern Albe- 

 marle Island^ on December 15, 1897. 



North of the Galapagos Islands this jaeger was occasionally 

 met with, three being taken by Mr. Beck during the home- 

 ward voyage. Two females were captured on October 5 in 

 latitude 14° 28' North, longitude 107° West. A young male 

 (No. 1849 C. A. S.), taken on November 14 in latitude 33° 

 7' North, longitude 134° 6' West, had the naked parts in life 

 as follows : Iris dark brown ; orbital ring black ; nasal shield 

 gray ; bill broadly tipped with very dark brown ; lower mandi- 

 ble lavender-gray, except distal portion; tarsi very pale blue; 

 webs and toes almost entirely black, save at junction with 

 tarsi. 



Two Parasitic Jaegers (Stercorarius crepidatus) were 

 taken at sea — one about thirty miles west of San Martin 

 Island, Baja California, on July 10, 1905, and another in lati- 

 tude 15° 36' North, longitude 110° 12' West, on October 13, 

 1906. On September 30, 1906, in latitude 10° North, longi- 

 tude 100° 25' West, one followed the schooner for several 

 minutes. 



Arenaria interpres: Turnstone 



Abingdon, Albemarle, Barrington, Bindloe, Brattle, Charles, 

 Chatham, Culpepper, Daphne, Gardner-near-Hood, Hood, 

 Indefatigable, James, Jervis, Narborough, Seymour, Tower, 

 and Wenman islands. 



Although nowhere found breeding, this species was ob- 

 served by us on all of the above islands and in every month 

 of the year. It proved to be the commonest shore-bird of the 



^Nov. Zool., V. 6, p. 192. 



