*02 3. IGUANIDJE 



with narrow rounded snout, and covered with small plates 

 largest on frontal and temporal regions. Nostrils opening 

 upward, outward, and slightly backward, in round plates a 

 little nearer to end of snout than to orbits. Superciliaries 

 like supraoculars, small and juxtaposed. Suboculars all 

 short, but slightly keeled. Rostral plate very small. La- 

 bial plates small and of about equal size. Symphyseal 

 plate long but very narrow. Several series of slightly en- 

 larged sublabials passing gradually into the finely granu- 

 lar gulars. Gular fold covered with very small scales. 

 Ear-opening large, almost vertical, with strong anterior den- 

 ticulation of spinose scales. A strong fold on each side 

 of neck, bearing numerous small conical or slightly spinose 

 tubercles. Scales on back and sides small, largest medially, 

 smooth and juxtaposed except laterally, becoming there 

 somewhat thickened or elevated posteriorly. Dorsals 28 

 to 35 to a head length. Ventral scales smooth, smaller 

 than dorsals, 140 to 156 rows between gular fold and anus. 

 Tail little longer than head and body, conical, very stout, 

 and covered with whorls of small, smooth, very feebly 

 spinose scales ; about 63 to 76 scales in a whorl at largest 

 part of tail. Scales on limbs smooth or with small pos- 

 terior spinose tubercles. Femoral pores very large in 

 males, small in females, varying in number from 13 to 20 5 

 average in 40 thighs, 16.35. 



The ground color both above and below is bright olive 

 yellow more or less suffused with orange, coarsely marbled, 

 blotched, or spotted above, on the head, body and limbs, 

 and speckled on the tail, with black or blackish brown. The 

 lower surfaces are sparsely spotted or speckled with black- 

 ish brown. 



