262 The American Naturalist. [Mareb, 
chapters describe the Mammoth, the Mastodon and the Wooly Rhino- 
ceros, Some Giant Birds, the Irish Elk and Steller’s Sea-Cow. 
In the appendices reference is made to the recent discoveries by Dr. 
Fraas of the structure of the dorsal and tail fins of Ichthyosaurus tenui- 
rostris, and to Mr. Henry. Lee’s discussion as to the existence of the 
great Sea-Serpent. Here also is given a list of British localities where 
mammoth remains have been found. 
The book is written in an entertaining style, and it is likely to 
interest the lay reader in the subject. That it will have considerable 
effect in extending a knowledge of the extinct forms of animal life 
there can be no doubt. Meanwhile it is a pity that the author did not 
consult some one familiar with the subject, who could have given him 
the correct nomenclature of some of the forms which he portrays. 
Thus the so-called Stegosaurus was previously named Hypsirhophus; 
and paleontologists who have seen both, allege that the name Bronto- 
saurus was given to the reptile previously named Camarasaurus. It is 
probable that Triceratops is Agathaumas, which was named and 
described fourteen years before the former name was given. It would 
have been better to have given a restoration of the Loxolophodon 
mirabile Marsh, rather than one of the L. ingens; since a skeleton of 
the former is known, while none of the latter had been obtained at the 
time the so-called restoration was made. We understand that a second 
volume is in preparation, which will contain other forms not included 
in the one under review. There isa fine field yet open in this direction, 
and we hope that Mr. Hutchinson will be able to take advantage of it. 
We owe to the courtesy of the publishers the opportunity of presenting 
two of the illustrations. 
