9. HOLBROOKIA 171 



Holbrookia ^ulchra SCHMIDT, Amer. Mus. Novitates, No. 22, 1921, pp. 

 1, 2 (type locality, Carr Canyon, 5200 feet, Huachuca Moun- 

 tains, Arizona). 



Holbrookia maculata cam pi SCHMIDT, Amer. Mus. Novitates, No. 22, 1921, 

 pp. 1, 3 (type locality, about eight miles northwest of Ada- 

 mana, Apache County, Arizona). 



Holbrookia elegans SCHMIDT, Amer. Mus. Novitates, No. 22, 1921, p. 2 

 (part). 



Description. Head rather short and low. Nostrils 

 large, opening on upper surface of snout. Supraocular 

 regions covered with small plates or granules, and separated 

 from each other by one or two rows of slightly larger plates. 

 Upper head-plates, except interparietal, small and irregular, 

 largest on frontal and pref rental regions, everywhere smooth 

 and rather flat. Several subocular plates, middle one very 

 long and strongly keeled. Superciliaries rather small, but 

 strongly imbricate. Eyelids with well developed fringe. 

 Supralabials strongly imbricate and produced laterally so as 

 to give snout a rounded outline when seen from above. In- 

 fralabials small and juxtaposed. Several series of flat sub- 

 Jabials. Gulars granular and smooth, growing larger and 

 imbricate on posterior fold. Back and sides covered with 

 scales or granules, largest near middle of back and changing 

 gradually to larger smooth ventrals. A dermal fold usually 

 present along each side between limbs. Tail of moderate 

 length, flattened near the body. Its scales feebly keeled and 

 slightly imbricate. Limbs rather long, not very slender. 

 Seven to sixteen femoral pores. 



The color above is gray, yellow, or brown, with two or 

 four series of dark undulate blotches, and numerous light 

 spots. The blotches are often more or less obsolete, and 

 are most distinct in females and young. The top of the 

 head is colored like the back, but without definite markings. 

 The limbs may be unicolor or crossed by dark bars. The 



