Tyrannus, ii. [102], [291]

Tyrant-Shrikes, ii. [290]

U.

Uaru, ii. [439]

Uintacyon, N. American Tertiary, i. 134

Uintatherium, N. American Eocene, i. 139

Uintornis, N. American Eocene, i. 163

Uma, ii. [401]

UMBRIDÆ, ii. [449]

Umbrina, ii. [428]