Letters, Extracts, Announcements, &c. 483 
rous, if not impracticable, we weighed anchor at daybreak 
and went off. 
Mr. H. KH. Dresser has, in his ‘ Birds of Europe,’ given 
such an exhaustive account of the history of Larus audouini 
up to date, that it is unnecessary for me to go into details as 
to its habitat; but I think that there is no doubt that the 
headquarters of this Gull are isolated rocks of the Western 
Mediterranean. Ido not believe that it has been, or will be, 
found to breed in precipitous cliffs. The ery of Audouin’s 
Gull is very peculiar, and in the nesting-season affords a good 
means of distinguishing the species. On wing the most 
noticeable peculiarities are the great length of the wings, and 
of course, if near enough to be distinguished, the brilliant 
coral-red bill and black-looking legs and feet. I may perhaps 
be allowed to mention here that the two young Gulls brought 
from the coast of Sardinia, and presented by me to the Zoolo- 
gical Society in the summer of 1874 as Audouin’s Gulls, 
have proved to be specimens of Larus leucopheus. I much 
regret this, and shall be more cautious in future in placing any 
faith in the asseverations of “vagrom”’ coral-fishing youths 
of Neapolitan or other Italian origin. In this connexion I 
may add that we found Larus leucopheus in some numbers, 
both in the early summer of 1876 and in November 1878, 
frequenting the harbour of Santander, and I should not be 
surprised at meeting with it during the next week in the 
neighbourhood of our present anchorage. 
Litrorp. 
8.8. ‘Glowworm,’ Dartmouth, 
July 26, 1880. 
Obituary.—On May 25th died, at Lagoa Santa, in Brazil, 
the Danish philosopher and zoologist, Dr. P. V. Lunn, aged 
nearly 79. Born in Copenhagen, he graduated at the Copen- 
hagen Unversity, and was intended for the medical profession. 
He was soon diverted from this pursuit, however, by his in- 
terest for natural science, and when, in 1825, he gained a 
double golden medal for some zoological prize essays, he made 
a definite choice between the two. Ill health made him seek 
