36 Mr. W. S. MacrzAr on the Comparative Anatomy 
Being now legitimately arrived among the essentially carni- 
vorous animals, I may be charged with having omitted to express 
that most evident affinity which all authors have remarked be- 
tween the Primates and Fere. This affinity, it will be said, 
must be granted to exist in nature, whether with Linnzus we 
place the Bats among the Primates, or whether with M. Cuvier 
we range them at the head of this naturalist’s group of Carnivores. 
It is equally true, whether with Schreber, Hermann, and Illiger 
we pass from Lemur to Didelphis*, or whether with Linnzeus and 
Erxleben, we place the Opossums among the Fere. 
But if by carefully following the progression of affinity, we 
have thus returned to the order of Primates, from which we 
departed, the group is a natural onet; and the following series, 
connected by affinity, harmonizes perfectly with that arrange- 
ment which we before acquired by. comparing them analogi 
cally with Mr. Vigors’s series of Birds. | 
1. Normal Group.. — 1. Frere. 
Teeth of three kinds, and — a con- 
tinuous series. = 
AMPHoDONTA Arist. » 2. PRIMATES. 
2. Aberrant Group. 3. GLIRES. 
Teeth not of three sorts, or not forming 
_ a continuous series. - ; 
4. UNGULATA. 
"AuaMPHODONTA Arist. 
5. CETACEA. _ 
On reviewing this series, we must recollect that there is an 
universally acknowledged connection between the Fere and the 
Glires by means of the Marsupial Animals, or Marsupiauz of 
* See on this subject particularly, Tab. Aff. Anim. p. 63. 
+ See Linn. Trans. vol. xiv. p. 55. 
t The Normal and Aberrant groups were distinguished and fütuéd by Aristotle in 
his Historia Animalium, but have not to my knowledge appeared again in any work, 
until Mr. Gray had the honour of reviving them in the Annals of Philosophy. 
Cuvier, 
