2U 



IGUANID^. 



dark spot on each side of the nape ; lower surfaces whitish, uniform 

 or spotted or marbled with brown. 



millim. 



Total length 125 



Head 19 



Width of head .... 23 

 Body 68 



California. 



Yg. 



b-c. Yg. 



d. ?. 



e. 6. 



g-i. J$^ 



California. 



California. 

 California. 

 Monterey. 



p 



? 



millim. 



Fore limb 4U 



Hind limb 52 



Tail 38 



Prof, de Blainville [P.]. 

 (Type of P. hlainviUii.) 

 Sir E. Belcher [P.]. 



J. H. Gurney, Esq. [P. 

 W. G. Lettson, Esq. [P.; 



5. Plirynosoma asio, 



Phrynosoma asio, Co^jf, Proc. Ac. PkUad. 1864, p. 178; Sumichrast, 



Arch. Sc. Phijs. Math. xlvi. 1873, p. 2o8. 

 Batracbosoma asio, Bocourt, Miss. Sc. Mex., Rept. p. 241, pi. xvii. 



fig. 9. 

 Phrynosoma spinimentum, Peters, Mon. Berl. Ac. 1873, p. 742. 



Head a little broader than long ; nostril somewhat within the 

 extension of the supraciliary ridge ; tympanum naked ; the head- 

 spines large, subequal in size ; on each side one postorbital, one 

 occipital, and two temporals ; the occipital spines almost perfectly 

 vertical. A series of very large projecting scales below the lower 

 labials ; several longitudinal series of enlarged, subequal, keeled, 

 pointed gular scales separated by granular intervals ; gular folds 

 several, irregular ; a group of spines on the side of the neck. Back 

 with very large distant tubercles, those on the sides of the vertebral 

 line flat, strongly keeled, and as broad as long ; a dorso-lateral 

 series of very large spines; two lateral series of spines, upper 

 largest ; pectoral and ventral scales keeled. Six to eight femoral 

 pores on each side. Male without distinctly enlarged postanal 

 scales. Tail about three times as long as the head. Olive-grey 

 above, with large, transverse, oblique, brown, black-edged spots on 

 each side of the back ; lower surfaces immaculate. 



millim. 



Total length 189 



Head 24 



Width of head .... 28 

 Body 90 



Mexico ; Lower California. 



a-c. (S 2 • Teliuantepec. 



millim. 



Fore limb 59 



Hind limb 73 



Tail '75 



