May, 1803.] REPTILES OF THE DEATH VALLEY EXPEDITION. 



201 



As to the name of this form, I have to remark that the specimens 

 have been carefully compared and found identical with Hallowell's type 

 specimen. It will be observed that in the original description (Pr. 

 Phil. Ac, 1854, p. 94) the locality of the type is stated to be " near 

 Fort Yuma, in San Joaquin Valley," but the self-contradiction of this 

 statement is explained by the fact that Fort Miller, Fresno County, is 

 meant, and not Fort Yuma, on the Colorado River (cf. Heermann's list 

 in Pac. P. P. Pep., X, Williamson's Poute, Zool., Pept., p. 24). 



Two very young specimens of this form (No. 18503 and 18504), which 

 are quite alike, differ considerably from the typical Death Valley speci- 

 men (No. 18481) of precisely the same size. In the latter the three 

 median dark dorsal bauds are more or less broken up by light spots 

 adjacent to the light stripes, while in the young G. undulatus these 

 bands are well defined and uniform blackish. It would therefore seem 

 that, while there is but little difference between adult and young in the 

 former, the young of the latter are considerably different from the 

 adults. 



[This subsx^ecies replaces the typical C. tigris on the west or coast 

 slope of the Sierra Nevada in California, where it was found from 

 Kernville south to Havilah and Walker Basin, and north to Three Rivers 

 and the East Fork of Kaweah River. It was collected also in the Can- 

 ada delasUvas, near Old Fort Tejon. The range of C. tigris seems to 

 be continuous with that of G. tigris undulatus through the three low 

 passes by which communication is established between the Mohave 

 Desert and the upper San Joaquin Valley — namely Walker and Te- 

 hachapi Passes and the Canada de las Uvas. — C. H. M.] 



List of specimens of CnemidopTiorus tigris undulatus. 



U.S. 





Kat 



Sex and 



Mus. 



age. 



No. 





18495 



ad. 



18196 



ad. 



18497 



ad. 



18498 



ad. 



18499 



ad. 



18500 



ad. 



18501 



adol. 



18502 



ad. 



18503 



JUV. 



18504 



JLIV. 



Locality. 



Alti- 

 tude. 



Date, 



Collector. 



Remarks. 



East Fork, Kaweah River, Calif . 



Walker Basin, Calif 



do 



Old Port Te.jon, Calif 



Kernville, Calif 



do 



South Fork, Kern River, Calif. . . 



Three Rivers, Calif 



do 



do 



Feet. 

 5,600 



2, 750 



July 29 

 July 14 

 ....do ... 

 July 7 

 June 23 

 ....do ... 

 July 7 

 July 28 

 Sep. 16 

 Sep. 14 



Bailey . 

 Fisher. 

 ...do .. 

 Palmer 

 ...do .. 

 ...do .. 

 Bailey . 

 Palmer 

 Bailey . 

 ...do.. 



Family Scincid.ze. 



Eumeces skiltonianus (B. & GL). 



The extent of variation in color, scale formula, and proportions is well 

 illustrated by the material brought home by the expedition. Thus 

 in the two examples from Maturango Spring in the Argus Range, both 

 quite adult and nearly of the same size, one (No. 18598) is nearly uni- 

 formly brownish-gray above, with hardly a trace of dark stripes, while 



