220 MR. A. H. EVERETT ON THE ZOO-GEOGRAPHICAL [Apr. 16, 
a colony of wild Herons (Ardea cinerea) had lately established 
itself, and now numbered 24 pairs. 
In Amsterdam Mr. Sclater was much interested to find an adult 
male and a young female of the fine Antelope Tragelaphus gratus, 
described by him in the Society’s ‘ Proceedings’ for 1883 (see P. Z.S. 
1883, p. 34, pl. viii.), remarkable for its long extended hoofs. 
These animals were namedin Amsterdam Tragelaphus decula, but 
were certainly not, in Mr. Sclater’s opinion, Antilope decula of 
Riippell (Neue Wirb. i. p. 11, t. iv.). They had been received 
from a correspondent on the Lower Congo. Other fine species 
represented in the Amsterdam Gardens were Canis jubatus of 
Brazil, Pedetes caffer of South Africa, Velis servalina, Ogilby 
(cf. Sclater, P. Z.S. 1874, p. 495, pl. Ixiii.), from the Congo, and 
Corythaix livingstoni, G. R. Gray. 
Mr. Sclater had also paid a visit to the private garden of Heer 
Blauuw, at Westervald, near Hildersum, and inspected with great 
pleasure the herd of Gnus (Catoblepas gnu) recently spoken of by 
that gentleman in a communication to this Society (supra p. 2), and 
the other beautiful specimens in that collection. 
Mr. E. T. Newton, F.Z.S., exhibited a tibio-tarsus of the large 
extinet bird Gastornis klaasseni from the Woolwich Beds of Croydon. 
The specimen had parts preserved in it which were wanting in the 
type (described, Trans. vol. xii. p. 143), and consequently the length . 
of the bone was now made certain. 
The following papers were read :— 
1. Remarks on the Zoo-geographical Relationships of the 
Island of Palawan and some adjacent Islands. By A. H. 
Everert, C.M.Z.S. 
[Received March 15, 1889.] 
(Plate XXIII.) 
It has been customary heretofore to regard the Island of Palawan, 
together with Balabac and the numerous smaller islands which lie 
between South Balabaec and the Mindoro Straits, as forming a kind 
of debatable Jand, of which the fauna was not sufficiently well known 
to allow of its being allocated definitely to the Philippines or to 
Borneo and the more typical sub-area of the Indo-Malayan Sub- 
Region. But in actual practice these islands have been treated as a 
part of the Philippine sub-area by the authors who have written on 
the zoology of the latter, though until lately this practice was fol- 
lowed simply for reasons of convenience, and not as expressing the 
opinion that their natural zoo-geographical relatiouship lay with that 
group rather than with Borneo. 
Quite recently, however, Professor J. B. Steere, to whom we are 
