6 MAMMALIA. 
as two or four, and which have a more or less complicated stomach 
with a moderate-sized simple cecum, as Ox, Hog, Peccary, and 
Hippopotamus. 
II. Anisodactyle. “ Hoofed quadrupeds with toes (on the hind 
feet at least) in uneven number, as one, or three, or five, the latter 
number being manifest m the Proboscidians. All these have a 
simple stomach and an enormous cecum, as Horse, Tapir, Rhi- 
noceros. 
Ill. Proboscidians. “ Resembling the preceding in havimg toes 
im uneven number, in having a comparatively simple stomach and 
an enormous cecum, -but combining with a long proboscis so 
many other peculiarities of structure as to ment the rank of a 
distinct group of Ungulata.” 
In the Quarterly Journal of the Geological Society for 1848, 
p- 131, with his usual fondness of renaming old groups, Mr. Owen 
proposes to change the name he has given to the above group 
to—l. Artiodactyla, 2. Perissodactyla, and 3. Proboscidia. 
In this paper the recent genera are arranged im the following 
order :— 
I. ARTIODACTYLA. * Ruminantia. 1. Moschus. 2. Antilope. 
3. Ovis. 4. Bos. 5. Cervus. 6. Camelopardalis. 7. Camelus. 
** Non-Ruminantia. 1. Hippopotamus. 9. Dicotyles. 10. Pha- 
cocherus. 11. Sus. 
II]. PertssopactyLa. 12. Tapirus. 13. Equus. 14. Hy- 
rax. 15. Rhinoceros. 
III. Progposcrpia. 16. Elephas. 
This arrangement is only founded on the consideration of the 
osteological conformation of the foot, and has the disadvantage of 
most artificially separating a very natural group recognized by 
Aristotle, Ray, Linneus, Illiger, Cuvier, and all recent authors, 
between two divisions of the order. Cuvier, Fleming, Blainville 
and others properly used the character here adopted to the whole 
group for the division of the Pachydermata mto subdivisions. 
Prince Charles Lucien Bonaparte (in his Prodromus Systematis 
Mastozoologie, 1847) arranges these animals in four orders, 
thus :— 
Subclass I. Epucasiti1a. Ord. V. Bettu#. Fam. 13. Ele- 
phantide. Subfam. 23. Elephantina. 24. Rhinocerotina. 25. Hip- 
popotamina. Fam. 14. Suide. 26. Tapirma. 27. Suma. 28. 
Anoplotherma. Fam. 15. Hyracide. 29. Hyracina. Fam. 16. 
Equde. 30. Equina. 
Order VI. Pecora. Fam.17. Camelide. 31. Camelina. 
Fam. 18. Cervide. 32. Moschina. 33. Cervina. Fam. 19. Came- 
lopardalide. 34. Camelopardalina. Fam. 20. Bovide. 35. An- 
tilopina. 36. Bovina. 
