SCELOPORUS. 75 
the back, and keeled, each keel terminating in a strong spine which projects outwards; 
the scales on the limbs and tail larger than those on the back and provided with a 
strong spine. ‘The series of large supraoculars is partly entire, partly divided into 
two. Length of the hind limb equal to the distance between the vent and collar ; length 
of the fourth toe equal to that of the head. Eleven or twelve femoral pores on each 
side. Nearly uniform greenish-olive above, whitish below ; throat bluish, with a white 
median longitudinal line. 
The only specimen received, a female, is 23 inches long without tail. 
C. The scales on the sides imbricate, but defined from the dorsal by a sharp line. 
26. Sceloporus variabilis. 
Sceloporus variabilis, Wiegm. Herpet. Mex. p.51; Bocourt, Miss. Sc. Mex., Rept. p. 200, t. 18 bis. 
figg. 1, la, 6, and t. 19. fig. 2; Cope, Proc. Am. Phil. Soc. 1885, pp. 169, 379, 897; Boul. 
Cat. Liz. p. 236; Sumichrast, Bull. Soc. Zool. v. 1880, p. 176. 
Hab. Norta America, Texas, Duval Co. (W. Taylor).—Muexico, Monterey (Cope), 
Tampico, Jalisco, north of the Rio Santiago (Richardson), Amula (H. H. Smith), 
Matamoros Izucar (Lerrari-Perez), Atoyac (H. H. Smith), Jalapa (Mus. Brit.), 
Hacienda del Bobo (Hdége), Orizaba, Vera Cruz, Huatusco (Godman), Mirador 
(Sartorius), mountains of Huamelula*, Tehuantepec (Suwmichrast); GUATEMALA, 
San Gerénimo (Salvin); Satvapor, La Union (Mus. Paris). 
From forty to forty-five scales in a series along the middle of the back. The large 
supraoculars in a single, undivided row. Hind limb longer than the distance between 
the vent and collar; fourth toe as long as the distance between the end of the snout 
and the shoulder. From eleven to thirteen femoral pores. Brownish or greenish, with 
a more or less distinct whitish band along each side of the back ; the back between the 
bands generally with two rows of dark spots. <A large black spot in the axil of the 
fore limb. Male with a pair of C-shaped blue bands on the abdomen, meeting in the 
middle of their convexity in old examples, and enclosing a reddish patch in their 
concavity. 
Sumichrast says that this species prefers rocky ground in ravines or along the banks 
of rivers. 
Length of an adult male 3 inches without tail. 
27. Sceloporus teapensis, sp. n. 
Hab. Mexico, Teapa in Tabasco (H. H. Smith). 
This form agrees with S. variabilis in every respect, but has much larger scales on 
every part of the body: there are only from thirty-one to thirty-three in a series along 
* In these specimens the dorsal bands are bright yellow in life, and sharply defined. 
*10 2 
