80 
ZOOLOGICAL LITERATURE. 
ACCIPITRES. 
Prof. Huxley (Proc. Zool. Soc. 1867^ pp. 462-465) goes into 
some detail with respect to the division of the Aetomorphce or 
Accipltres. They appear to him to fall into four well-defined 
primary groups, which he names Strigidce^ Cathartid<Bj Gypae- 
tid(Bj and Gypogeranid( 2 . The first is coextensive with the 
usually assigned limits of the family ; the second comprises the 
Vultures of the New World, Cathartes and Sarcorhamphus ; the 
third the Vultures of the Old World, with the Falconidee in the 
ordinary acceptation of the term, excepting Gypogeranus, which, 
alone, forms the fourth family. These groups are not merely 
based, like many of the others proposed by the author (see Gene- 
ral SuBjECT^^), on modifications of the palatal structure, but on 
characters drawn from various parts of the skeleton, combined 
with pterylographical peculiarities. Being so, we cannot but 
regard them as worthy the deepest attention, since the arrange- 
ment they indicate is probably quite natural, and will probably 
be followed by us in future. 
PALCONIDiE. 
Aquila ripana^ P. Wurt.” (Naumannia, 1867, p. 432), is A, imperialism 
T. V. Heuglin, J. f. 0. 1867, p. 290. 
AquUa ruevioides, A. clanya, and A. neevia, notes on. J. Vian, R. Z. 1867, 
pp. 129-137, 207, 208. 
Aquila ncevioidesj a permanent resident in Bulgaria. W. H. Cullen, Ibis, 
1867, pp. 247, 248. 
Aquila ncevioides, P. WUrt.” (Naumannia, 1857, p. 432) (wecCuv.), is A, 
minuta. T. v. Ileuglin, J. f. 0. 1867, p. 292. 
Aquila imperialis in captivity. 0. Herklotz, Sitzungsb. z.-b. Gesellscb. 
Wien, 1867, pp. 69, 60. 
Aquila pe7inata, Mr. Dresser’s note on its nidification in Spain (Zool. Rec. 
iii. p. 72) reprinted. Zoologist, S. S. pp. 803-807. 
Haliaetus leucocephalus is thought to have occurred in Ireland. J. A. H. 
Browne, Zool. S. S. pp. 562,563. 
Haliaetus pelagicus is figured. D. G. Elliot, B. N. Am. part vi. 
Pandion haliceetus is one and the same species all over the world, though 
specimens from the Atlantic coasts of America are somewhat larger than 
those of the Pacific. J. II. Gurney, Ibis, 1867, pp. 464, 465. 
Helotarsus leuconokiSm P. Wiirt.” (Naumannia, 1857, p. 482), is distinct 
from, or at least a conspecies of, H. ecaudatus, being smaller, and having more 
slender bill and feet, the outermost row of wing-coverts, with the seconda- 
ries and tertials, pm*e black, and the scapulars also much shorter. T. v. Heu- 
glin, J. f. 0. 1867, pp. 291, 292. {Cf. T. v. Heugl. Sitzungsb. k. k. Akad. 
Wien, 1856, p. 260, and J. II. Gurney, Ibis, 1868, pp. 140, 141.) 
Milvago crassirostris (Zool. Rec. ii. p. 91), if distinct, should stand as M, 
megalopterus (Meyen). P. L. Sclater, P. Z. S. 1867, p. 329 j differs very slightly, 
if at all, from M. montanus. P. L. Sclater and O. Salvin, P. Z. S. 1867, 
p. 988. 
Leucopternis super ciliaris, Yon Pelzeln (Sitz. Ak. Wien, xliv. p. 10) is iden- 
