106 THE VOYAGE OF H.M.S. CHALLENGER. 



CEnops falklandica, the differential character relied upon, which is, apparently, merely 

 the slight greyish-brown margination of the secondaries, appears to us to be insufficient, 

 Eo-o-s of this bird were obtained by the Challenger naturalists. They have already 

 been described by Mr Gould (Proc. Zool. Soc, 1859, p. 93). 



27. Nycticorax obscurus, Bp. 



Nycticorax obscurus, Scl. et Salv., NomeucL, p. 126 ; Proc. Zool. Soc, 1878, p. 436. 

 Nycticorax americana, Gould, Proc. Zool. Soc, 1859, p. 96. 



[No. 655. Female. Tom Harbour. 

 Eyes orange ; feet greenish-yellow. Stomach had fish. 

 No. 666. Female. Porto Bueno. 

 Eyes orange. 



No. 737. Female. Falkland Islands. 

 Eyes yellow. Stomach had Crustacea.] 



Eggs of this species were obtained. They have been already described by Mr 

 Gould {I.e.) 



28. Theristicus melanojtis, Gm. 



Tlieristicus mdanopis, Scl. et Salv., Nomencl, p, 127; Proc Zool. Soc, 1878, p. 436. 



[No. 691. Male. 1 (W Point . 

 No. 692. Female. J 



Female, eyes red ; feet pink ; bill black. 



Male, eyes yellow ; bill green ; legs pinkish with black scales.] 



29. Bernicla antarctica, Gm. 



Bemicla antarctica, Gm. : Scl. et Salv., Nomencl., p. 128; Proc. Zool. Soc, 1878, p. 436 



[No. 632. Male. ^ 



No. 633. Female, j 



■nt no, ^r r Peno'uin Islands, Messier Channel. 



No. 634. Young. [ ° 



No. 635. Young. J 



Eyes brown ; feet yellow ; bill of male black, of female flesh colour ; bill of young- 

 dark ; feet grey-brown. Stomachs had pieces of small stones, shells, and sea- weed." 



No. 736. Female. Falkland Islands.] 



The two goslings (634, 635, obtained January 1) are just changing their down, and 

 present the black back, brown head, and barred wings and under surface of the adult 

 female partially developed. The sex is not noted in either of them. 



