122 Bulletin of Laboratories of Denison University [v»oi. 
femoral pores about I2 ; tail short, abruptly narrowed at about 
the proximal third. 
Color: Upper parts gray yellow or light brown, with two 
or four longitudinal series of dark splotches and numerous 
lighter spots ; top of head like back but without definite pat- 
tern ; upper surfaces of legs marbled with brown ; throat white 
or yellowish, sometimes marbled with darker ; tail with a single 
series of spots ; under parts white or yellowish, with two or 
three transverse of black laterally behind the fore legs and 
which do not extend dorsally above the lateral fold and are 
sometimes edged with blue. 
This little species is abundant everywhere in the Rio Grande 
valley and elsewhere in central New Mexico. It is extremely 
variable in color and adapts itself both temporarily and perma- 
nently to local color conditions. It feeds largely on plants 
and climbs readily. 
Holhrookia Texana, (Troschel), Baird and Girard. 
Plate XI Pigs. 2-S‘ 
Cophosaurus texanus, Tt^oschel, Arch. f. Natur., 1850; 
Holbrookia texana, Bd. and Gd. Proc. Acad. Phila. , 1852; U. 
S. Bound. Surv.; Bocourt, Miss. Sc. Mex. Rep.; Cope, Bui. U. 
S. Natl. Mus. , 1880; Boidenger, Cat. Liz. Brit. Mus. 
affinis, Bafd diUd. Girard, Proc. Ac. Phil., 1852. 
Description : Body slender, head as long or longer than 
head and body ; head very small, V-shaped in vertical outline ; 
nasal openings dorsal, prominent; head plates mostly small and 
irrelegular except the interparietal which is not large, and a 
series of rather large axial plates in front of the latter ; super- 
ciliaries large and strongly imbricated ; one of the suboculars 
very large; eyelids fringed; about seven large imbricated upper 
labials ; lower labials smaller, not imbricated, bordered below 
by one or more series of enlarged sublabials ; gular scales 
flat, not imbricated ; posterior margin of the gular fold feebly 
denticulate ; ventral scales larger than the dorsals and laterals ; 
a lateral fold extending from the fore to the hind limb ; femoral 
pores from twelve to fourteen ; males with enlarged postanal 
plates ; tail slender ; hind foot very long. 
