576 



REPORT OF NATIONAL MUSEUM, 1898. 



stripe, which extends from above the auricular meatus in the G. t. per- 

 plexus, is here wanting. There is sometimes a trace of a median dorsal 

 stripe, but generally not. Faint longitudinal lines are sometimes pres- 

 ent between the stripes mentioned. On the sides below the external 

 stripe are three series of more or less longitudinal spots, which outline 

 three stripes ; but they are not connected, excepting sometimes in tbe 

 transverse direction. This stage represents the C. gracilis Baird and 

 Girard. 



In maturer specimens rounded spots appear between the longitudinal 

 stripes, and the lateral spots become connected transversely, so as to 



Fig. 106. 



CNEMIDOPHOEUS TES8ELLATUS TESSELLATUS SAY. 

 = 1. 



Utah. 



Cat. No. 3041, U.S.N.M. 



leave the dark ground color in the form of irregular transverse bars 

 (Cat. Nos. 3017, 4970, 15619). In some specimens tbe median dorsal 

 stripe is distinct, and is even divided into two (Cat. No. 11978). Such 

 specimens have six stripes, very close together, and only the external 

 pair on each side are homologous of those of the C. sexUneatns and G. 

 gtdaris. In tbe majority of adult specimens the light spots expand 

 transversely and produce an emargination on one side or the other of 



