The island night lizard, Xantusia riversiana Cope (Fig. 1), is found only on Santa Barbara, San Clemente, and San Nicolas Islands off southern California (Fig. 2). The species is sufficiently divergent in morphology from ...

The power of flight has preadapted bats for island colonization. This accounts for their disproportionately high representation in the terrestrial mammalian fauna of the California Islands. Of the eighteen species of native ...