Streets recorded as Crotalus adamanteus atrox a rattlesnake which he secured on Los Coronados. Dr. Stejneger has shown that this specimen, which is still in the National Museum, is a Pacific Rattlesnake.
San Martin Island.
The only reptile heretofore known from San Martin is a gopher snake found by Dr. Streets. The Academy has also specimens of two species of lizards from the island, both of which are here described as new. The Uta probably is confined to the island, while the Gerrhonotus seems to be found throughout the San Diegan Fauna.
1. Uta martinensis sp. nov.
Plate VI.
Diagnosis.—Similar to U. stansburiana but larger; fifth toe reaching to or beyond end of second; dorsals imbricate, mucronate, strongly keeled; scales on upper surfaces of arm and thigh keeled; scales of ear-denticulation longer than the longest diameter of largest temporal; caudals large, imbricate, strongly keeled and mucronate.
Type.—Adult male, Cal. Acad. Sci. No. 4698, San Martin Island, Lower California, Mexico, R. H. Beck, May 3, 1903.
Description of the Type.—Body and head considerably depressed; snout low, rounded; nostrils large, opening upward and outward nearer to end of snout than to orbit; head plates large, smooth, nearly flat, interparietal largest; frontal divided transversely; 3 or 4 enlarged supraoculars, separated from the frontals and frontoparietals by 1 series of small plates; superciliaries long, narrow and projecting; central subocular very long, narrow and strongly keeled; rostral and supralabials long and low; 6 supralabials; symphyseal small, followed on each side by a series of 5 or more large plates which are separated from the infralabials by 1 or 2 series of sublabials; gular region covered with smooth, hexagonal or rounded scales changing to granules on the sides of the neck and to larger imbricate scales on the strong gular fold, largest on the denticulate edge of gular fold where larger than scales on belly; a group of enlarged plates in front of ear-opening; ear denticulation very long, of 3 scales, largest exceeding in length longest diameter of largest plate in front of ear; back covered centrally with nearly uniform imbricate, keeled scales which change gradually to granules on neck and sides of body, and become mucronate posteriorly; scales largest on tail, strongly imbricate, strongly keeled and mucronate above and on sides; posterior surfaces of thighs and arms covered with small granular scales similar to those on sides of body; other surfaces of limbs provided with imbricate scales, keeled on upper surfaces of arm, forearm, thigh, leg, and foot; adpressed fore limb not reaching insertion of thigh; fifth finger reaching about to end of second; fifth toe reaching to or beyond end of second; femoral pores 15; 17-23 of largest dorsals equaling shielded part of head.
Head above grayish olive; central portion of neck and back dark brown, with 2 series of rather indefinite darker brown blotches each bordered behind and sometimes laterally by pale blue scales; some scattered pale blue dots on back and upper surfaces of limbs and tail; tail marbled with brown and blue; sides mottled with brown and pale bluish yellow, forming stripes on sides of neck; chin and gular region indigo, mottled with bluish yellow at sides; postaxillary blotch blackish indigo; lower surfaces of body, limbs and tail grayish indigo.
Length to anus 62 Length of tail 92 Snout to ear 15 Shielded part of head 14 Width of head 13 Fore limb 26 Hind limb 46 Base of fifth to end of fourth toe 18 Fifth toe 10
| Length to anus | 62 |
| Length of tail | 92 |
| Snout to ear | 15 |
| Shielded part of head | 14 |
| Width of head | 13 |
| Fore limb | 26 |
| Hind limb | 46 |
| Base of fifth to end of fourth toe | 18 |
| Fifth toe | 10 |
Only one specimen of this Uta was secured.
2. Gerrhonotus scincicauda ignavus subsp. nov.
Plate VII, Figs. 1-2.