1868.] MR. SCLATER ON FALCO ELEONOR.«. 567 



to be specifically distinct from the common Maeacus rhesus, having 

 a pale flesh-coloured face, and longer, smaller, and much less densely 

 furred tail. 



3. Two White American Cranes (Grus americana), purchased of 

 the Zoological Society of Antwerp, and received November I'ith and 

 19th. These birds were in the brown immature plumage, in which 

 stage they were not unlike the young of Grus montlgnesia, figured 

 in the Society's 'Proceedings' for 1861, p. .369. Mr. Sclater re- 

 marked that the acquisition of this species raised the number of re- 

 presentatives of the family Gruidce now or lately in the Society's 

 Gardens to twelve in number, viz. : — 



1 . Grus montlgnesia. 7. Grus canadensis. 



2. americana. 8. carunculata. 



3. cinerea. 9. Tetrapteryx paradigeus. 



■i. leucogeranns. 10. Balearica pavonina. 



5. antigone. 11. regulorum. 



6. australis. 12. Anthropoides virgo. 



The only two well-determined species wanted to complete the series 

 were G. vipio and G. monachns of Japan, of which the Society had 

 never yet succeeded in acquiring specimens. 



Mr. Sclater also remarked on the great difference in size between 

 the two specimens of G. canadensis lately living in the Gardens, 

 and stated his opinion that it was probably on a small specimen of 

 this bird that Mr. Cassin had established his Grus f rater cuius. 



Mr. Sclater also called the attention of the Meeting to the two 

 Eleonora Falcons (^Falco eleonorce) presented to the Society's col- 

 lection by Capt. Thomas Waite on the 7th of October, and stated 

 that, in reply to inquiries, Capt. Waite had favoured him with the 

 following account of the exact locality in which these birds were 

 procured : — " I found these Falcons on the Island of Mogador. It is 

 a very curious place ; and there are properly two islands and several 

 detached rocks, but the whole extent is only about one-fourth by 

 three-fourths of a mile. In height it does not exceed 100 feet ; and 

 about half of it is very steep and craggy, and the rocks curiously 

 honeycombed and forming natural holes and ledges, in which thou- 

 sands of birds build and sleep — some sea-birds and Martins, but 

 principally Pigeons. The favourite place with the birds is what we 

 call the little island, which is nearly round, about 90 feet high and 

 about one-fourth of a mile in diameter. When you get to the toj) 

 you find it a mere shell, the centre being an immense basin, with 

 perpendicular sides, a large archway at the north and south ends, 

 through which the sea flows, and at high water you can get a boat 

 inside. There is no water on the island, and the Pigeons go to the 

 mainland in the daytime ; but I do not think the Falcons ever leave 

 it." 



The following papers were read : — 



