132 REPTILES AND BATRACHIAN8 



UTA ORNATA B. & G., 1852. 



Guaymas ; San Francisco, Cal. 



Pores varying in number from ten to thirteen on each 

 side. 



~ :>9Tti4 JJ. ~ __. _ 



CROTAPHYTUS COLLARIS Say; Holbr. 



T THJOO ni ,aljii9iij 



Monclova, Mex. 



The exterior of the two oblique bands on the neck is 

 broken into four or five spots. On the body behind the 

 black collar there are six transverse series of black spots, 

 the median pair of each being larger and more intense in 

 color. Lighter spaces separate the spots and form cross- 

 bands, as in specimens from Arkansas. 



SCELOPORUS TORQUATUS Wiegm., 1828. 



/-. J- O H-11 TVT 



Concordia, near Saltillo, Mexico. 



Tbo'/ .(ft bfiiio'iis eynsa fi ; 



SCELOPORUS POINSETTII B. & G., 1852. 



Monclova and San Luis Potosi, Mexico. 

 crio'ii Don&teib .91 ! 'Jill lo tu?'j 



SCELOPORUS SPINOSUS Wiegm., 1828. 



San Antonio, Texas ; San Pedro, Mexico. 



Dr. Boulenger states, 1885, that this species "appears 

 to be completely linked with S. undulatus" through the 

 variety 8. clarkii B. & G. 



SCELOPORUS SCALARIS Wiegm. , 1828. 



Concordia, thirty miles north of Saltillo, Mexico ; City 

 of Mexico. 



-vcf ; gal edi r t,iR$n ii BR -jsh/ioi 

 SCELOPORUS QRAMMICUS Wiegm. , 1828. 



San Luis Potosi, Mexico. 



irfv/jfoftd 

 SCELOPORUS MICROLEPIDOTUS Wiegm., 1834. 



City of Mexico. 



