572 Reviews—Burckhardt’s Aipyornis. 
claimed for the ‘“ diagram-section”’ of Belemnites, page 179, which, 
in its peculiarly projecting collar, reminds one of a well-known 
political caricature. 
We do not, of course, deny that, after eliminating these and similar 
slips, there remains a residuum of truth. The chapters on Fora- 
minifera and Sponges, for instance, seem to have passed under a 
revising eye. But the method of residues, though useful enough to 
the chemical investigator, is of no great advantage to the student 
of paleontology. We should not have devoted so much space 
to pointing out the failings of the book, had we been able to dis- 
cover anything in it that made up for them. One does not expect 
great things from an elementary manual; but 7¢ must be correct. 
The list of works to which the student is directed will, however, 
enable him easily to rectify the errors of the manual itself. It 
would be ungracious to object to the inclusion of certain names in 
this list, since they at least give it a flavour of respectability ; but 
we may be allowed to wonder why others have been omitted. Surely 
Mr. Woods does not wish to keep his students in ignorance of 
Malcolm Laurie’s studies on the Hurypterida; and why is no 
mention made of the leading authorities on fossil Crinoids—P. H. 
Carpenter and Wachsmuth and Springer ? 
To conclude: for these 222 small pages of large type the 
University of Cambridge ask the student to pay six shillings. 
This will at least check the circulation of the book, a result that 
not even the author dare deplore. G. F. H., F. A. B. 
VII.—Uzzer Aeyvornis. By R. Burcxuarpt. Paleontologische 
Abhandlungen. Neue Folge. Band II. Heft 2. (Jena, 1893.) 
N this memoir the author gives an account of some remains of 
Hipyorms collected by Hildebrandt near Sirabé, in Central 
Madagascar, during the year 1880, and now deposited in the 
Mineralogische Museum in Berlin. 
The special interest of the paper lies in the fact that in it we 
have, for the first time, a description and figures of the pelvis, an 
immature metatarsus, and a complete fully adult specimen of the 
same bone, of which the proximal end was previously unknown. 
The collection also includes a complete tibia, an imperfect femur, 
Some vertebre and fragments of ribs. The author considers that 
these bones belong to a new species (4. Hildebrandti), intermediate 
in size between the 4. medius and A¥. modestus of Milne-Edwards. 
The pelvis, the most important of the specimens described, 
possesses the following characters: (1) The whole of the constituent 
bones unite without trace of suture. (2) The post-sacral vertebrae 
are much reduced in size. (3) The bulk of the pelvis lies in front 
of the acetabulum. (4) The axis of the pelvic vertebra at first runs 
straight back, then, from vertebrae 7-12, opposite the acetabulum it 
forms a strong ventral convexity, behind which the reduced post- 
sacral vertebra slope away dorsalwards. (5) There is a_pre- 
acetabular process. (6) The ischium, which is convex outwards, 
