20 SCIENTIFIC SOCIETY OF SAN ANTONIO 



warm day that comes along in winter a few of these lizards are 

 sure to be seen, either at the bases of the mesquite or in wood- 

 piles". Cope records this species from Helotes under the name 

 of Sceloporus scalaris Wiegmann but I found no specimens in 

 the Marnock collection. Fourteen miles from San Antonio in 

 the direction of Leon Springs, I found several of these lizards 

 on rocks along the base of a limestone bluff. In some of the 

 southwestern counties this species lives among prickly-pear 

 plants. 



37. Phrynosoma cornutum (Harlan) Horntoad : Texas 



Horned Lizard. 

 Agama cornuta Harlan, Journ. Acad. Nat. Sci. Phila., 



Vol. 4, 1825, p. 299, pi. 20. 

 Common throughout the county. 



38. Ophisaurus ventralis (Linne) Joint Snake: Glass Snake 



Anguis ventralis Linne, Syst. Nat., Ed. 12, 1766, p. 391. 



Mr. Marnock collected several specimens in the neighbor- 

 hood of Helotes. It has not been recorded from San Antonio 

 but probably occurs there. It is rather common in Kerr, Ken- 

 dall, Comal and other counties in the district and will probably 

 be found throughout Bexar County. 



39. Gerrhonotus infernalis Baird Plated Lizard 



Gerrhonotus infernalis Baird, Proc. Acad. Nat. Sci. 



Phila., 1858, p. 255, 

 Mr. Marnock collected nearly a dozen examples of this 

 rare lizard at Helotes. The Scientific Society collection con- 

 tains a fine specimen from a point fifteen miles from San An- 

 tonio on the Blanco road, collected by the late Dr. R. Menger. 



40. Cnemidophorus gularis Baird and Girard Western 



Lined Lizard : Striped Race-runner 

 Cnemidophorus gularis Baird and Girard, Proc. Acad. 



Nat. Sci. Phila., Vol. 6, 1852, p. 128. 

 Common throughout the county. 



41. Leiolepisma laterale (Say) Ground Lizard 



Scincus lateralis Say, Long's Exped. Rocky Mts., Vol. 2, 

 1823, p. 324. 



This species was first obtained at San Antonio by Dr. C. 

 B. R. Kennerley and Lieut. Whipple. Louis Garni, in his manu- 

 script list of San Antonio reptiles, mentions two collected near 

 the first mission. The Baylor University collection contains 

 one from Helotes and several others from the woods and parka 

 along the Salado and San Antonio rivers. 



