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Introductory Remarks[2]
Table of Distribution[3]
Faunal Relationships[4]
South Farallon Island[4]
San Miguel Island[6]
Santa Rosa Island[11]
Santa Cruz Island[13]
Ana Capa Island[14]
San Nicolas Island[15]
Santa Barbara Island[15]
Santa Catalina Island[16]
San Clemente Island[17]
Los Coronados[17]
San Martin Island[18]
San Benito Island[21]
Cerros Island[22]
Natividad Island[24]
Magdalena Island[24]
Santa Margarita Island[25]
Socorro Island[26]
Clarion Island[27]

June 13, 1905

Introductory Remarks.

The first contribution to the herpetology of the islands of the Pacific Coast of North America of which I have knowledge was, curiously enough, a description of the lizard of Socorro, an island perhaps the least accessible of them all. This description was published by Professor Cope in 1871. Six years later Dr. Streets recorded a few notes on the fauna of Cerros, San Martin, and Los Coronados. Since that time there have appeared at intervals contributions from Yarrow, Belding, Cope, Garman, Townsend, Stejneger, and Van Denburgh, resulting in the gradual accumulation of a considerable fund of knowledge. The papers in which this information is contained are so widely scattered through journals and the publications of various societies and museums as to be but little available. It has, therefore, been thought expedient to review the whole subject while reporting upon the material which in the last few years has been accumulating in the collection of the Academy.

In this paper there are mentioned or described twenty-nine species and subspecies, representing the fauna of eighteen islands. Of these four are amphibians, nineteen are lizards, and six are snakes.

The following forms are here described as new:—

The island distribution of the various species and subspecies is indicated in the following table:

Distribution of Island Reptiles and Amphibians.