Legs high and upright; no soles.
1. Mole-like—Dogs.
Claws blunt, the Kornzahn both in upper and lower jaw.
2. Shrew-like—Hyænas.
Claws blunt; no Kornzahn but a small Querzahn.
3. Bat-like—Cats.
Claws sharp, curved, and retractile; no lower tubercular tooth, but a small upper one.
Fam. 14. Lingual Thricozoa, Seals.
Feet fin-shaped, the hinder pair stretched out, dental formula complete, but the lateral teeth tolerably even, and six or four incisors; tongue mostly somewhat slit. They correspond to the Whales.
Fam. 15. Nasal Thricozoa, Bears.