50. pnRTNOsoMA. 245 



T). Phrynosoma regale. 



Phryuosoma Lliiiuvillii, part., (h-aij, Cat. p. 228. 

 Phrynosoma regale, Girdrd, U.S. Explor. Exped., Her p. p. 406, and 

 U.S. Mex. Bound. Surv., licpf. p. 9, pi. xxviii. figs. 1-3; Bocourt, 

 Miss. Sc. Mex., Rc-t. p. 23--), pi. xii. fig. 12. 



Head a little broader than long ; nostrils within the canthi 

 rostrales ; tympanum naked ; postorbital spine small ; head bor- 

 dered posteriorly by a series of contiguous large spines obliquely 

 directed upwards, viz. two smaller median and two larger outer 

 occipitals and, on each side, four temporals. A series of very large 

 projecting scales below the lower labials, almost continuous with the 

 temporal spines ; gidar scales very feel »ly keeled, witli a longitudinal 

 series of enlarged ones on each side ; two groups of spines on each 

 side of the neck ; a double transverse gular fold. Back with very 

 large trihedral tubercles, the largest broader than long ; two lateral 

 series of spines, lower very small ; pectoral and ventral scales very 

 feebly keeled. Fourteen or fifteen femoral pores on each side, 

 extending only on the proximal third of the thigh, and the two 

 series narrowly separated on the prscaual region. Male with 

 enlarged })ostanal scales. Tail a little over twice the length of the 

 head. Brownish above, with an ill-defined darker band on each 

 side of the back ; belly whitish, with a few brownish spots. 



millim. niilliiu. 



Total length 138 Fore limb 42 



Head 20 Hind limb 54 



Width of head .... 22 Tail 4ft 



Body 



/z 



•> 



Desert of Gila and Colorado. 

 a. (S ■ [California.] 



7. Phrynosoma cornutum. 



Phrynosoma cornutum, Gray, Cut. p. 229. 

 Agama cornuta, Harlan, Journ. A''. Plulnd. iv. 182-5, p. 299, pi. xx. 

 Phrynosoma bufouium, Wiegm. Isis, 1S28, p. 307. 

 cornutum, Gray, Griff. A. K. ix. Syn. p. 45 ; Holhr. N.-Am. 



Herp. ii. p. 87, pi. xi. ; Gtrard, in Stausb. Exped. Gr. Salt Lake, 



p. .'IGO, pi. viii. figs. 1-0 ; Hallow, in Sityr. Exped. Ziini Sf Color. 



Rio. p. 119; Girard, U.S. Explor. Exped., Herp. p. 403, pi. xxi. 



figs. 0-9 ; Bocourt, Miss. Sc. Mex., Rept. p. 230, pi. xii. fig. 9. 



havlanii, Wicym. Herp. Mex. p. o4 ; Dum. Sf Bibr. iv. p. 314.. 



(Tropidogaster) cornutum, Eitziny. Syst. Rept. p. 79. 



( ) butbnium, Eitziny. I. c. 



Head as long as broad, or a little broader than long; nostrils 

 within the canthi ro.stralcs ; tympanum naked ; five spines on each 

 side of the head, viz. a postorbital, three temi)orals, and an occipital ; 

 a more or loss distinct small median occii)ilal ; the large occipitals 

 much longer than the temporals, obliquely directed upwards and 



