1891.] The Origin of the Galapagos Islands, 227 
together by the “ Albatross” has been very thoroughly worked 
up by Mr. Robert Ridgway. Collections have been made by 
Darwin, Kinberg, Dr. Habel, and the “ Albatross.” A few speci- 
mens have also been collected by Dr. W. H. Jones, Kellett and 
Wood, Dr. Neboux, Cookson and Markham. I give a list of 
islands with the names of the collectors : 
Chatham: Darwin, Kinberg, Jones, Kellett and Wood, “ Al- 
batross.” Charles: Darwin, Neboux, Kinberg, Jones, Cookson, 
Markham, “ Albatross.” Indefatigable: Darwin, Kinberg, Habel. 
“ Albatross.” James: Darwin, Kinberg, “ Albatross.” Bindloe: 
Habel. Albemarle: Darwin, Cookson, “ Albatross.” Abingdon: 
Habel, “Albatross.” Duncan: “ Albatross.” Hood: “Albatross.” 
We have, therefore, collections from nine islands. So far 
69 species of birds have been described, besides the albatross, 
which is recorded by Delano and Wolf from Hood Island, 
Thirty-two are found on Indefatigable, 28 on Chatham, 27 on 
James, 23 on Charles, 18 on Abingdon, 14 on Bindloe, 12 on 
Hood, 5 on Duncan, and 4 on Albemarle. The great number 
of Indefatigable is due to the collection of Dr. Habel, who 
brought not less than 267 skins from this island. Albemarle 
has hardly been touched. Darwin collected one bird. The 
“ Albatross” remained only five hours at Tagus Cove, and collected 
four species. There can be no doubt whatever that a very much 
greater number of birds exist on Albemarle. We know from 
Wolf that some parts of Albemarle, especially the southern ones, 
have a well-developed flora (fifty to sixty species of Phanerogams 
in the lower regions) and there must be also birds. 
No collections have been made on Brattle, Barrington, Narbor- 
ough, Jervis, Tower, Wenman, and Culpepper. The number of 
genera collected is 40; of these 6 are peculiar to the islands, 8 
are found in continental America, and 27 have a wide distribution. 
Of the 69 species 49 are peculiar to the islands, or 71 per cent. 
The six peculiar genera are Nesomimus, Certhidea, Geospiza, Cac- 
tornis, Camarhynchus, and Creagrus. Nesomimus belongs to the 
Mimidae; Certhidea to the Coerebide or Honey Creepers; Crea- 
grus to the Laride; and the three others to the Fringillide or 
