HERPETOLOGY OF LOWER CALIFORNIA. 



121 



Lisi of specimens of Gerrhonotus scincicauda. 



Cal. Acad. 

 Sci. No. 



Locality. 



Date. 



■ 

 Collector. 



580 

 598 



San Pedro Martir Mt., L. C. 

 Valladares ? , L. C. 



May 4, 189.3 

 May 29, 1893 



A. W. Anthony. 



Xantusia gilberti new species. Plate xi. 



Diagnosis. — Similar to X. vigilis, but with smaller eye, 

 two plates occupying the position of the frontal of that 

 species, and the interfrontonasal larger and continued 

 posteriorly to completely separate the frontonasals. 



Type. — Cal. Acad. Sci. No. 401, San Francisquito, 

 Sierra Laguna, Lower California, Gustav Eisen, March 

 28, 1892. 



Description of the Type. — The eye is very small, with- 

 out lids, and with vertical pupil. The nostrils are pierced 

 at the junction of the rostral, internasal, first superior la- 

 bial, and first loreal plates. There are three loreals, in- 

 creasing in size posteriorly. There are two internasals. 

 The two frontonasals are separated by the interfrontonasal, 

 which is in contact, also, with the two frontal plates. The 

 other head plates are two frontoparietals, two parietals, two 

 large occipitals, and one interparietal. The eye is sur- 

 rounded by a ring of small scales, of which the supercil- 

 iaries are largest. This ring is separated from the third 

 loreal by two small scales. There are eight superior and 

 eight inferior labials. The anterior border of the ear is 

 slightly denticulate. The ventral plates are arranged in 

 thirty -two transverse and ten or twelve longitudinal se- 

 ries. The caudal scales are smooth, convex, and in 

 whorls of about equal length. The back and sides are 

 covered with smooth convex granules of about uniform 

 size. There are eight and nine femoral pores. The gu- 

 lar regions are covered with smooth, flattened, subhex- 



