1 0. VTA 185 



one hundred between interparietal plate 



and backs of thighs. 



ff . — Dorsal scales weakly keeled, largest along 



central zone, changing gradually to smooth 



granules before dorsolateral region is 



reached. 



U. s. stansburiana. — p. 227. 

 ff. — Dorsal scales strongly keeled, changing 

 rather abruptly to smooth granules on dor- 

 solateral region. 



U. s. hesperis. — p. 233. 

 eeee'. — Dorsal scales larger, average fewer than 

 100 between interparietal plate and backs 

 of thighs, usually strongly keeled, chang- 

 ing rather abruptly to smooth granules 

 on dorsolateral region, 

 fff. — Size smaller; basal caudals more regular. 



U. s. elegans. — p. 240. 

 fff. — Size larger; basal caudals more irregular; 

 San Martin Island. 



U. martinensis. — p. 247. 

 dddd°. — No distinct dark blue blotch behind axilla, 

 eeeee. — Dorsal scales large, fewer than ninety 

 from interparietal plate to backs of thighs, 

 strongly keeled, mucronate; light stripes 

 on side of neck more distinct. Santa 

 Catalina Island. 



U. squamata. — p. 249. 

 eeeee'. — Dorsal scales smaller, more than ninety 

 between interparietal plate and backs of 

 thighs, less strongly keeled, not mucron- 

 ate except near tail; light stripes on side 

 of neck less distinct. Carmen, Coronado 

 and Danzante islands. 



U. mannophorus. — p. 25 2. 



