142 BULLETIN 19 9, UNITED STATES NATIONAL MUSEUM 



17. Scales of primary series not twice as large as those of the secondary series; 



largest of the dorsals inferior in size to enlarged femorals and tibials; ventral 

 interhumeral and interfemoral areas immaculate, or but slightly stip- 

 pled ornatus schmidti (p. 143) 



Scales of primary series almost twice as large as those of secondary series; 

 largest of dorsals equal to, or larger than, enlarged femoral and tibial scales; 

 ventral interhumeral and interfemoral areas heavily maculated. 



ornatus ornatus (p. 142) 



18. Largest of dorsals equal to, or larger than enlarged femorals; vertebrals extend- 



ing onto basal portion of tail for a distance equal to half, or slightly more, of 

 length of femur; entire gular region in males, except sublabials, an intense 

 blue; head length/head width ratio averaging 81 percent. 



ornatus chiricahuae (p. 143) 



Largest of dorsals inferior in size to enlarged femorals; vertebrals extending 



only onto rump, or but slightly farther; no uniform intense blue color present 



in male gular region; head length/head width ratio averaging 75 percent or 



less 19 



19. Enlarged dorsals separated into 2 parallel series by width of vertebral series, 



which is greater in width than broadest of enlarged dorsals; prefrontals and 

 frontonasals usually 3 each; general coloration pallid, light tan above, 

 whitish below, males with bright-blue abdominal patches; average head 

 length/width ratio 75.4 percent; average length, snout to vent, 55.1 mm. 



ornatus symmetricus (p. 144) 

 Enlarged dorsals separated by a vertebral series whose width is less than that 

 of largest of dorsal scales; prefrontals 2, rarely 3 (by inclusion of an azy- 

 gous); frontonasals 5; general color variable, but usually dark brown or 

 gray with dark cross bands, and heavily stippled, spotted, or blotched ven- 

 trally; abdominal patches in males dark blue to indigo; average head 

 length/head width ratio 70.6 percent; average length, snout to vent, 46.4 mm. 



ornatus linearis (p. 143) 



ORNATUS GROUP 



Species. — Three species and 11 forms are included; all but two 

 subspecies of ornatus occur or may be expected to occur in Mexico. 



Range. — Utah, central Texas, and southern Nevada southward to 

 extreme northern Mexico, reaching farther southward only along the 

 coast to southern Sinaloa; Clarion Island. 



UROSAURUS CLARIONENSIS (Townsend) 



Uta clarionensis Townsend, Proc. U. S. Nat. Mus., vol. 13, 1890, p. 143. 

 Urosaurus clarionensis, Mittleman, Bull. Mus. Comp. Zool., vol. 91, 1942, p. 

 149, pi. 8 (type). 



3Vpe.— U.S.N.M. No. 15904; C. H. Townsend collector. 

 Type locality. — Clarion Island, Revillagigedo Islands, Mexico. 

 Range. — Known only from the type locality (administered by 

 Colima) . 



UROSAURUS ORNATUS ORNATUS (Baird and Girard) 



Uta ornata (part) Baird and Girard, Proc. Acad. Nat. Sci. Philadelphia, vol. 6, 



1852, p. 126. 

 Uta ornata ornata (part), Schmidt, Amer. Mus. Nov., No. 22, 1921, p. 6. 

 Urosaurus ornatus ornatus, Mittleman, Bull. Mus. Comp. Zool., vol. 91, 1942, 



pp. 133-135. pi. 1 (cotypes). — Smith, Handbook of lizards, 1946, pp. 264- 



266, pi. 65. 



