VOI 



,g n '] PROCEEDINGS OF THE NATIONAL MUSEUM. 139 



the black borders to these feathers rather more distinct. But I very 

 much doubt whether these slight differences in coloration would prove 

 constant were a series of specimens of the two forms compared. In 

 short, it seems almost certain that P. mexicanus is simply a smaller in- 

 tertropical race of P. vigua, in which case it should be called P. vigua 

 mexicanus. 



57. Urile magellanica (Gmel.). 



San Martin Island, one specimen. 



58. Urile albiventer (Less.)?. 



San Martin Island, one adult female. 



This is apparently the species called Phalacrocorax albiventris by 

 Sclater and Salvin (Voy. Challenger, Zoology, vol. n, pt. viii, p. 121, pi. 

 25, fig. 2), but the crest is different both as to position and form from 

 that indicated in both the description and figure cited, since it springs 

 directly from the forehead instead of the middle of the crown, and the 

 feathers are quite straight instead of being distinctly recurved. 



Family LARID.E. 



59. Larus dominicanus Liciit. 



Sandy Point, six specimens; Elizabeth Island, one specimen. 



60. Larus glaucodes Meyex. 



Port Otway, three specimens. . 



61. Sterna hirundinacea Less. 



Elizabeth Islaud and Point Grappler, two specimens. 



Family STERCORARIID.E. 



62. Megalestris antarcticus (Less.). 



St. Peter and St. Paul Island, one specimen. 



Family DIOMEDEID^). 



63. Diomedea melanophrys Tejim. 

 One specimen, without label. 



Family PROCELLARIID.E. 



64. Puffinus major Fabr. 



"Off Patagonia," one specimen. 



Family COLYMBID^J. 



65. Colymbus rollandi (Quoy and Gaim.). 

 One specimen ; locality not given. 



Family SPHENISCLTLE. 



66. Spheniscus magellanicus (Forst.). 

 Two specimens, without labels. 



