312 Letters, Extracts from Correspondence, Notices, fyc. 
Mr. Gould informs us that the Night-Heron of the Falkland 
Islands, which we have hitherto termed N. gardeni*, and con¬ 
cerning which Capt. Abbott has written an interesting note in 
our last Number, is not the same as the North-American bird, as 
we had imagined from Mr. Gould himself having called it Nycti- 
corax americanus (see P. Z. S. 1859, p. 96), but belongs to the 
darker-coloured species found in the southern parts of South 
America, Nycticorax obscurus, Licht., Bp. Consp. ii. p. 14<1. l^°j 
With regard to the Larus roseiventris of the Falkland Islands 
(p. 166), we have endeavoured to solve the question of its specific 
validity by sending a specimen to the Berlin Museum, whence 
Dr. Cabanis has obligingly furnished us with the following note 
respecting the species :— 
“ Larus roseiventris of Gould cannot be confounded with L. 
maculipennis of Lichtenstein ( Mouette blanche, Azar. ?), because 
L. maculipennis has the greater part of the wings black, only 
spotted with white. 
“ Larus albipennis, Licht., is identical with L. glaucotes, Meyen, 
the only difference being that Meyen's original example is rather 
smaller. I can find no specific distinction. 
“ Larus roseiventris, therefore, has only to be compared with 
L. glaucotes, Meyen. These two birds are very much alike, but 
may perhaps be considered separable, as forms belonging re¬ 
spectively to the eastern and western coasts. L. roseiventris 
differs in its somewhat smaller size, in its remarkably smaller 
and shorter bill, shorter feet, and its underside not being pure 
white, but tinged with rose-colour.” 
In part i. of the ‘ Journal fur Ornithologie ' for this year, G. 
von Rosenberg of Amboyna announces the discovery of a new 
species of Cassowary in the island of Salawattie, which he pro¬ 
poses to call C. kaupi. It has no wattles, and appears to be quite 
distinct from the several other species of this genus which have 
lately been described under the names C. bennettii , C. uniappen- 
diculatus, and C. bicarunculatus. 
* SeeP.Z.S. 1860, p.387, and ‘ Ibis/ 1861, p. 15/. 
