HERPETOLOGY OF LOWER CALIFORNIA. 1 23 



top of the snout. The posterior nasal forms sutures with 

 the anterior nasal, first second and third labials, loreal, 

 prefrontal, and frontonasal plates. The loreal is in con- 

 tact with the third and fourth labials, first subocular, pre- 

 ocular, first superciliary, first supraocular, prefrontal, 

 and anterior nasal. There are four supraoculars; the 

 first, long and narrow, the fourth rather small. The sec- 

 ond, third, and fourth supraoculars are separated from 

 the superciliaries, and the third and fourth from the front- 

 oparietal and parietal, by small convex granules. There 

 are two transverse rows of small plates behind the pari- 

 etals and interparietal. There are five superior and six 

 inferior labials to below the middle of the eye. The sub- 

 labials are very large and are separated from the infrala- 

 bials by a series of small granules and plates. The an- 

 terior gulars are large centrally, become gradually smaller 

 laterally, and are abruptly separated from the medium 

 sized posterior gulars. The central scales of the collar 

 are quite large, those on its edge, smaller. The back is 

 covered with small- uniform granules. There are eight 

 longitudinal and thirty-seven transverse rows of ventral 

 plates, and four series of large preanals. There are seven 

 rows of brachials, three of antebrachials, seven of fem- 

 orals, and four of tibials, but no postantebrachials. The 

 tail is covered with whorls of obliquely keeled scales. 

 There are twenty-three and twenty-four femoral pores. 



The color above is grayish sepia fading to olive gray 

 laterally, with three longitudinal dark chestnut bands on 

 each side, which (bands) are twice as wide as the inter- 

 vals between them, and are so invaded by spots of the 

 ground color, as to resemble series of confluent brown 

 maculations. The limbs are reticulated with coarse 

 chestnut lines. The upper surface of the head is olive, 

 palest on the snout. The gular region and the sides of 



