vd IGUANIDH. 
dark spot on each side of the nape; lower surfaces whitish, uniform 
or spotted or marbled with brown. 
millim., millim. 
Total length ...... 125 Fore limb ........ 40 
ead sae ca tinea 19 Hind limb........ 52 
Width of head .... 23 Tail. 2 aakcee eet 38 
Body, giawtaas 68 
California. 
a Yg. California. Prof. de Blainville [P.]. 
(Type of P. blainvillit.) 
b-c. Yg. California. ir E. Belcher [P.]. 
d. Q. California, 
e 3. Monterey. J. H. Gurney, Esq. [P.]. 
fd. —P W.G. Lettson, Esq. tp y 
gt SQ. Se 
5. Phrynosoma asio. 
Phrynosoma asio, Cope, Proc. Ac. Philad. 1864, p. 178; Sumichrast, 
Arch, Se. Phys. Math. xlvi. 1873, p. 258. 
Batrachosoma asio, Bocourt, Miss. Sc. Mex., Rept. p. 241, pl. 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. millim. 
Total length ...... 189 Fore limb........ 59 
Headey cis'cn'g alee a 24 Hind limb........ 73 
Width of head .... 28 Haul. v5 car oerhe wares 75 
BOO 05 ses a caterers 90 
Mexico; Lower California. 
a-c. 3 &. Tehuantepec. 
