606 REPORT OF NATIONAL MUSEUM, 1898. 



ornamental of the genus. It is well distinguished from the C. grahamii 

 in color characters, as well as iu the presence of the well-developed 

 postantebrachial scales. In the C. gularis it corresponds exactly in 

 color characters with the tUjris form of the G. tessellatus tessellatus, desig- 

 nated in the plate of colors as D and E. 



The only specimens that I have seen taken within the boundaries of 

 the United States are Cat. Nos. 17208 and 17210 from Arizona. Here all 



Vig. 119. 



CNEMIUOPHOHUS GUL2VRIS SCALAlilS ClIl'E. 

 = 1. 



Chihuahua. 



(■a.t. N'... s:ilO. U.S.N.^I. 



the stripes are completely broken up, a trace of the pale ones remaining 

 for a short distance in front of the groin on each side, and on each side 

 of the dorsal median line posteriorly. The black is the ground color, 

 and on the sides it is in more or less distinct transverse stripes. These 

 specimens considerably resemble the G. g. communis Cope, but the latter 

 has the light spots much less numerous, especially on the legs, and they 

 are never continent into transverse bars. The femoral pores are more 

 numerous, ranging from nineteen to twenty-three, while in Cat. ISTo. 17210 



