Cerros Island Horned Lizard

Phrynosoma cerroense, (Stejneger)

Colouration: Brownish gray. A dark patch on each side of the neck, and three irregular cross-bands on the back. Abdomen cream colour, with dusky spots.
Dimensions: Total Length. . . . . 4 7/16 inches.
Distribution: The type specimen was taken on Cerros Island, off the west coast of Lower California at about the middle of the peninsula. The species has not been found elsewhere.

The present species seems to be closely allied to the Pacific Horned Lizard, from which it differs in having but a single row of the spiny, marginal scales, and having rounded horns. There are two central horns, and three successively enlarged horns on each temple. On each side of the chin are three rows of enlarged scales. The abdominal scales are smooth.

Length of Head and Body. . . . . 3 5/16 inches.