REPTILES OF THE PACIFIC COAST. / i 



in June and July, are about 7x13 mm., each inclosed in 

 a tough, leathery, non-calcareous shell. 



19. — Sceloporus occidentalis Baird & Girard. Blue- 

 bellied Lizard. 



Sceloporus occidentalh, Baird & Girard, Proc. Ac. Nat. Sci. Phila., 



VI, 1852, p. 175 (tj'pe locality California, probably Oregon); 



Girard, U. S. Explor. Exped., Herp., p. 383, pi. 19, figs. 8-14. 

 Sceloporus frontalis, B. & G., Proc. Acad. Nat. Sci. Phila., VI, 1852, 



p. 175 (type locality Pug-et Sound); Gir., U. S. Expl. Ex., 



Herp., p. 384, pi. 19, tigs. 1-7. 

 Sceloporus hocourtU, Boulenger, Cat. Liz. Brit. Mns., II, 1885, p. 



229 [part] (Monterey, Cal., Mt. Whitney, Cal., Santa 



Cruz). 



Description. — Head and body little depressed. Nostril 

 opening much nearer to end of snout than to orbit. 

 Upper head-shields smooth, moderately large, and 

 slightly convex; interparietal much largest. Frontal 

 usually divided transversely. Parietal, frontoparietal, 

 and frontal plates separated from enlarged supraoculars 

 by a series of small plates or granules. Superciliaries 

 long and strongly imbricate. Middle subocular very 

 long, narrow, and strongly keeled. Rostral plate of 

 moderate height, but great width. Labials long, low, 

 and nearly rectangular. Below lower labials and behind 

 large pentangular symphyseal, some series of plates 

 larger than gulars. Latter smooth, imbricate, and 

 usually emarginate posteriorly. Ear-opening large, 

 slightly oblique, with an anterior denticulation of 

 smooth, accuminate scales. Scales on back equal-sized, 

 keeled, pointed, and arranged in nearly parallel longi- 

 tudinal rows. Scales on sides similar to those on back, 

 but much smaller and directed obliquely upward . No lon- 

 gitudinal dermal folds and no transverse fold on throat. 

 Upper surfaces of limbs provided with large, keeled scales. 

 Posterior surface of thigh covered with small, accuminate, 



