on beetles of St. Helena, 270
X.
Xenurus, in Brazilian caves, 145
Xiphodontidæ, European Miocene, 119
Z.
Zeuglodontidæ, N. American Tertiary, 140
Zonites priscus, Palæozoic, 169
Zoological characteristics of Palæarctic region, 181
Ethiopian region, 252
Oriental region, 315