66 
ZOOLOGICAL LITERATURE. 
Falconid^. 
Hogg, John. On the Roman Imperial and Crested Eagles. 
Ann. & Mag. N. H. 3 ser. xiii. pp. 520-523. 
The author strives to identify the uncrested Eagle of classical mythology 
with the Aquila heliaca of Savigny, and the crested Eagle of the Syrian 
sculptors with either the Aquila desmursi of South Africa or Spiza'etus coro~ 
natus of India ! 
Aquila harthelemyi. Two living specimens of this doubtful species were 
procured from the historical nest at Sainte Yictoire in 1857. One of them 
in April 1864, never having previously shown any departm’e in plumage 
from the ordinary A. clmjsaetusy was observed to have the first scapular 
feather on each side of the body snow-white — the characteristic according to 
M. Jaubert of his supposed species. An immature male bird from Southern 
Algeria, in the Norwich Museum, also presents this same peculiarity, and the 
title of this singular form to be considered specifically distinct merits further 
observation. J. H. Gurney, Ibis, 1864, pp. 339, 340. 
Spiza'etus ayresi is the immature form of S. sqnlogaster, to which species 
S. zonurus and S. leucostiyma should also be referred. P. L. Sclater, Ibis, 
1864, pp. 303, 304 j J. H. Gurney, I c. p. 356. 
Archibuteo lagoptis in adult plumage is figured. J. Gould, B. Grt. Br. 
part vi. 
Buteo vulgaris. The difierent colouring presented by the young birds of 
this species is described, and its connexion with the varied plumage of the 
adults considered, by J. II. Blasius, J. f. O. 1804, pp. 276-289. (See above, 
under the heading ^Neossology.’) 
Falco gyrfalco is represented in A. Nevrton’s ^Ootheca Wolleyana,’ pi. C. 
Falco eleonorce. A contribution to the Natural Histoiy of this bird is 
given by Th. Kriiper, Jourii. f. Orn. 1864, pp. 1-23. The author passed a 
considerable time in the summer of 1862 on the Cyclades, especially Paros, 
Naxia, and Mykoni, in investigating the very peculiar economy of this species. 
It preys upon Lanius rtifus, and, he was told, also on Gallinago media. 
The adult female varies much. He found four distinct types of colouring in six 
specimens. The author remarks on the synonymy of the species; it is 
identical with F. arcadicm and F. concolor of Lindermayer (nec F. concolovy 
Temm.) and F. dichrous of Erhard ; and proceeds to describe its mode of 
breeding. It makes no nest, but lays its eggs on clilFs generally in the month 
of August. In the beginning of October it departs for the winter, but the 
time of its return the author has not yet precisely ascertained. He does not 
seem to have seen it, how^ever, before the beginning of April. 
Falco dichinsoni is a new species, discovered by the late Dr. Dickinson on 
the banks of the Shire, in East Africa. It is allied to F. ardesiacus and 
F. zoniventris ; and for the distinct section which these three species form, 
the author proposes Dissodectes as a subgeneric name. P. L. Sclater, 
P. Z. S. 1864, p. 248, and Ibis, 1864, p. 305, pi. viii. ; also J. Ilirk, Ibis, 
1864, p. 316. 
Tinnunculus ruJicepSy a subspecies, from Egypt and Nubia, of T. alaudariuSy 
is treated of. L. Brehm, Nov. Act. Acad. Nat. Cur., 1 June, 1864, pp. 4-8. 
Eryihropus vespertinus found south of the equator. J. H. Gurney {Jide 
O. J. Andersson), P. Z. S. 1804, p. 2, and J. Kirk, Ibis, 1864, p. 310. 
