10. UTA 227 



ings laterally and on the labial plates. The lower surfaces 

 of the body and limbs are grayish indigo. There is a large 

 postaxilliary blotch of blackish indigo. 



The female is similar but the light dots are less distinct 

 and there are dark brown dorsal and lateral blotches. The 

 limbs have faint brown cross-bars above. 



Length to anus 49 56 56 58 58 61 



Length of tail 59 95 94 88 98 76 



Snout to ear 11 12 13J^ 12 13 14 



Shielded part of head 11 13 13 12 12 13 



Width of head _ 10 11 11 11 11 12 



Fore limb 22 23 25 24 25 26 



Hind limb 37 41 42 36 41 43 



Base of fifth to end of 



fourth toe 15 16 16 15 17 18 



Remarks. This species is a member of the U. stans- 

 buriana group but it is easily distinguished by the character 

 of its dorsal and caudal scales. 



Distribution. This lizard is known only from West, 

 Middle and East San Benito islands, off the west coast of 

 Lower California. It is a ground dwelling species and is 

 most abundant on the lower portions of the islands. 



46. Uta stansburiana stansburiana (Baird & Girard) 

 NORTHERN BROWN-SHOULDERED UTA 



Uta stansburiana BAIRD & GIRARD, Proc. Acad. Nat. Sci., Phila., Vol. VI, 

 1852, p. 69 (type locality, Valley of Great Salt Lake, Utah); 

 BAIRD & GIRARD, Stansbury's Exped. Great Salt Lake, 1853, p. 34-5, 

 pi. V, figs. 4-6; BAIRD, Rep. Pac. R. R. Surv., Vol. X, 1859, p. 

 37; COPE, Bull. U. S. Nat. Mus., No. 1, 1875, p. 48 (part); YAR- 

 ROW & HENSHAW, Ann. Rep. Chief of Engineers for 1878, Surv. 

 W. 100th Merid., Appendix NN, 1878, p. 122, (part); YARROW, 

 Surv. W. 100th Merid., Vol. V, 1875, p. 568, (part); YARROW, 

 Bull. U. S. Nat. Mus., No. 24, 1883, p. 56 (part); COPE, Proc. 

 Acad. Nat. Sci., Phila., 1883, pp. 15, 18, 21; BOULENGER, Cat. 

 Lizards Brit. Mus., Vol. II, 1885, p. 211 (part); STEJNEGER, N. 



