See Plates 32, 33, and 34, Vol. I., published at 

 the end of Vol. II., having been omitted in the 

 First Volume. 



In the text, it has been observed, that there is a greater 

 difference between the skulls of the so-called wolves and soms 

 species of dogs. In proof of this remark, we beg to refer the 

 reader to the three profiles here engraved, and he will per- 

 ceive, in the occipital ridge of the common or French wolf, 

 as well as in the form and disposition of the orbits, a con- 

 siderable departure from the more robust skull of the Russian : 

 the articulations of the lower jaws differ likewise, and both 

 are very unlike the Canadian wolf, whose profile approaches 

 the form of the Dingo, and, in comparative inferiority of 

 dentition, is like the Aguara wolf of South America, and still 

 more, in most of its proportions, like the Matin dog of France ; 

 but in this last animal, and in the Dingo, the orbits stand 

 more forward, and leave greater space for the cerebral cham- 

 ber, while the Canadian wolf appears to possess more for 

 olfactory development. Of ail the canidse, jackals, or rather 

 (the skull here given being taken from F. Cuvier), we should 

 saj"-, the Thons and foxes have, in proportion to their size, the 

 most formidable teeth, and hence their bite, is so much more 

 severe than that of larger dogs. 



Animals, whose general sti-ucture is so universally familiar 

 to all readers, do not, we believe, require a detailed descrip- 

 tion of their ostrology; but we have thought it right to add 

 profile and superficial views of the teeth in both jaws, in 

 order to render the description in Vol. I., page 113, more 

 completely intelligible. The curious will then perceive, reck- 

 oning from the great canine backwards, the three false molars, 

 then the great carnassiers, and finally, the tubercular teeth 

 the last of which, small, round, and insignificant, is that which 

 is wanting in our sub-genus Chryseus, and forms only the 

 penultimate in tliat of Agriodus. 



