AVES. 
45 
THE GENERAL SUBJECT. 
Altum^ B. Aberrationen. Journ. fur Orn. 1867, pp. 85-89. 
An enumeration of various abnormally coloured birds which 
have come under the author’s observation. 
Cope, E. D. An Account of the Extinct Reptiles which ap- 
proached the Birds. Proc. Acad. Nat. Sc. Philadelphia, 
1867, pp. 234, 235. 
A very brief abstract of what must have been a most inter- 
esting and valuable paper. The approximation was at two 
points — the first by the Pterosauria, to which Arch( 2 opteryx had 
affinity. The second by the Dinosauria of the orders Gonio- 
poda and Symphypoda, . This was chiefly manifest by the bones 
of the hind limbs. The most bird-like of the Connecticut 
tracks were made by Batliygnathus, which had a more or less 
erect position. The separated metatarsals of the Bplieniscida* 
make an approach to the structure of the bird-like Reptiles ; but 
the author was unable to indicate whether the closest approxi- 
mation was here or among the llatitcs. 
Crommelin, J. P. van Wickevoort. Contributions k I’hybrido- 
logie ornithologique. Arch. Neerl. ii. pp. 447-452. 
Droste, Ferd. von. Das Reichsmuseum zii Leyden. Journ. 
fur Orn. 1867. pp. 352-355. 
. Crommelin’s Museum. Tom. cit. pp. 355, 356. 
Brief notices of the well-known Museum at Leyden, and the 
less-known collection of Heer Crommelin at Haarlem. 
Hartt, C. Frederick. The Recent Bird-Tracks of the Basin 
of Minas. American Naturalist, 1867, pp. 169-176, 234- 
243. 
An agreeably written paper, but containing nothing of very 
great novelty or importance. That the commonly received ex- 
planation of the process by which fossil bird-tracks are pro- 
duced is correct is shown by the author’s experience of recent 
similar markings. 
Hosselbarth, G. Vergleichende Uebersicht der Vogel. Mit- 
theilungen aus dem Osterlande, Bd. xviii. (1867) pp. 67-86. 
A treatise of an elementary nature, in the form of a lecture 
delivered to the Natural History Society which meets at Al- 
tenburg. 
Hutton, F. W. Notes on the Birds seen during a Voyage from 
London to New Zealand in 1866. Ibis, 1867, pp. 185-193. 
These form a worthy sequel to the author’s former paper 
(Zool. Rec. ii. p. 56) . About 20 species (all but one belonging 
to Procellariidce) are noticed, some of them not determined, 
and among them two, or perhaps more, which may be new 
