164 bulletin: museum of compara.tive zoology. 



as high. All of the islands are wooded and have a total population of 

 several thousands. The Albatross anchored at Uala 14-17 February, 

 where the following birds were collected : — Ptilopus ponaj^ensis, 

 Metaholus rugensis, Myiagra oceanica, Conopoderas syrinx, Zosterops 

 semperi owstoni, Aplonis opaca, and Myzomela rubrata riibrata. 

 Water birds secured were Nycticorax cahdonicvs, Ixobrychus situmsis 

 moorei (new), Pluvialis dominicus fulvus, Arenaria inter pres oahuensis, 

 and Hderactitis brevipe^. 



The adjacent islands of the lagoon were not visited. One of them. 

 Ruk, had eleven species of land birds when reported upon in 1900. 



The Ladrone Islands. Guam, visited 21 to 25 February, was 

 ^ the last island at which birds were collected during the cruise. This 



island is partly volcanic and partly elevated coralliferous limestone. 

 It is twenty-two miles in length, forested, and has a height of 1,000 

 feet. The only land bird collected was the quail (Excalfadoria chinen- 

 sis lineata) introduced from the Philippines. The water birds ob- 

 tained were Phaeopus phaeopus variegalus, Gallinula chloropns, and 

 Ixobrychus sinensis bryani. Twenty-seven species of land birds are 

 known to the island of Guam. The expedition proceeded northward 

 through the Ladrone or Mariana Islands, arriving at Yokohoraa 4 

 March, 1900. 



Part 2. — Annotated List of the Species. By Alexander Wetmore. 



The collection of birds made during the cruise of the Albatross 

 in Polynesia during the winter of 1899-1900 numbers 391 skins, 

 fourteen alcoholic specimens, and one skeleton. These specimens 

 represent ninety-three distinct forms, of which fourteen are here 

 described for the first time.^ Collections of birds were made on 

 thirty-three islands some of which were little known and were visited 

 by an ornithologist for the first time. The entire collection has 

 considerable general interest, as a number of species were collected 

 at their type-localities, and in several cases important series of such 

 birds were secured. In working out this rich material I have been 

 under deep obligation to Dr. C. \Y. Richmond, Associate Curator of 

 Birds in the U. S. N. M., for advice and assistance in matters pertain- 

 ing to bibliography and nomenclature. At one time Dr. Richmond 

 had planned to publish on this collection personally but was prevented 



1 Three new species of CoUocalia collected during this cruise of the Albatross were described 

 by Oberholser in 1906, see p. 200-201. 



