VARIATIONS OF GARTER-SNAKES. 



95 



labials occur in practically one-half of the specimens, and, while the 

 infi'alabials are occasionally 8, 9, or 10, the ayerage is very close to 

 8. The sino;le specimen from Columbus has 6/8, the one from Frank- 



8 



7 



::c^ 30 



() 



4i 



\2 



<> 



;c 



\ 



\ 



\ 



^$- 



Indiana. Mic-higan. Ohio. Fcnn-sylvania. 



Fig. 32.— Dl.\GR.\M SHOAVING THE V.\RI-4.TION IX THE NUMBER OF SrPR.\LABI.\LS IN TH.\MN0PHI.S 



BUTLER I. 



10 



8 



7 



3 



X- - _ 



50 



11 



C) 



H 



\ 



2^- 



Indiana. Michigan. Ohio. Pennsylvania. 



riG.33.— Dl.\GRAM .SHOWING THE V.\RI.VTION IN THE NUMBER OF INFRAL.\.BIAL.S IX ThAMNOPUIS 



lin, Venango County, Pennsylvania has 6/8, and Mr. Fowler's speci- 

 men from McKean County, Pennsylvania, 6/6-7. 



An examination of the ventrals shows the following distribution: 

 Ann Arbor, males 134-146, females 132-140. All of the Indiana 



