THREE NEW LIZARDS. 297 



California. I have therefore selected one of the north- 

 ern specimens for my type of P. frontalis. 



Description: Adult male (Type No. 93, Leland Stan- 

 ford Junior University Museum, collected by C. H. Gil- 

 bert and W. W. Price in Bear Valley, San Benito County, 

 California, March 31, 1893). Nostril pierced in the 

 line of the canthus rostralis. Head spines, one occipital, 

 three large posterior and two smaller anterior temporals, 

 and one postorbital, on each side; and one small inter- 

 occipital. The enlarged plates below the infra-labials are 

 large and pointed, five on each side, the series sometimes 

 continued backward by small spines. Below the rictus 

 is a large spine, with a smaller and more pointed one 

 behind it. There are three or four series of enlarged, 

 pointed, gular scales on each side, the exterior of which 

 are continued back upon the gular folds. A few of the 

 scales in front of the occipital spines are convex or 

 pointed, and those on the temporal regions have ridges 

 running in the general direction of the temporal spines. 

 The other head scales are flat, each with numerous 

 granulations, which are usually darker than the ground 

 color of the head. There are two groups of spines on 

 each side of the neck. Two rows of periphero-abdomi- 

 nal spines are present, the lower series shorter than the 

 upper and composed of smaller spines. The tail is 

 bordered with a single row of lateral spines, and has a 

 small group of very long spines just behind the leg. The 

 scales on the anterior surfaces of the limbs are large, 

 pointed and strongly keeled; those on the chest, abdo- 

 men and proximal half of the ventral surface of the tail 

 are smooth, but those on the terminal portion of the tail 

 are keeled. Tympanum naked. Femoral pores sixteen. 



Color above yellowish-white with large brown blotches, 

 largest on nape. Chest and belly bright gamboge-yellow, 



