482 7. XANTUSI1DJE 



dead branches. They were taken on the 17th and 18th of 

 September. 



At Cabazon, Riverside County, I found one in a grow- 

 ing tree yucca of a smaller species, and at San Matias Pass, 

 Lower California, Heller found this lizard beneath the 

 prostrate limbs of a yucca. 



99. Xantusia gilbert! Van Denburgh 

 SAN LUCAN NIGHT LIZARD 



Xantusia gilberti VAN DENBURGH, Proc. Cal. Acad. Sci., Vol. V, 1895, 

 p. 121, pi. XI, (type locality, San Francisquito, Lower Calif- 

 ornia); VAN DENBURGH, Proc. Cal. Acad. Sci., Ser. 2, Vol. 5, 1895, 

 p. 529; DITMARS, Reptile Book, 1907, p. 182; STEJNEGER & BAR- 

 BOUR, Check List N. Amer. Amph. Kept., 1917, p. 64; VAN DEN- 

 BURGH & SLEVIN, Proc. Cal. Acad. Sci., Ser. 4, Vol. XI, 1921, p. 46; 

 NELSON, Mem. Nat. Acad. Sci., Vol. XVI, 1921, pp. 114, 115. 



Amoebopsis gilberti COPE, Am. Naturalist, 1895, p. 758; COPE, Report 

 U S Nat. Mus., for 1898 (1900), p. 555, fig. 101. 



Description. Body nearly cylindrical, with very short 

 limbs. Upper surface of head flattened, curving towards 

 snout. Three folds on throat, anterior connecting ears and 

 encircling head. Nostril opening at junction of rostral, 

 internasal, postnasal and first labial plates. Rostral in con- 

 tact with first labial and internasal plates. Two interna- 

 sals followed by a large frontonasal, which separates the 

 prefrontal plates. Behind these, two large frontals (in 

 contact), bordered posteriorly by two frontoparietals. Each 

 of two f rontoparietal plates forming sutures with one fron- 

 tal, second and third superciliaries, first supratemporal, 

 parietal, interparietal and its fellow of opposite side. Parie- 

 tals and very large interparietal bordered behind by two 

 large occipitals. A row of small supratemporal scutes along 

 outer edge of occipital and parietal plates. Two large 

 Joreals in contact below with superior labials, and above with 



