VAKTATIONS OF (iARTEK-SNAKES. 



109 



as constant, although the (hai:^raiii (fip;. 41) in(Hcat(\s that there is 

 some variation in th(> number of superior labials. Thus, while 8 

 supralabials is the rule throughout most of the range, 7 occurs in the 



F 



O F 



M \E X I C O 



y 



ilf0> 



w Sf- 



Fn;. 4).— nisTRiBUTiox of TriAMN'OPins s.vuritus sackeni, as indicated nv the localitv 



RECORDS. 



western (southern Mississippi and western Florida) specimens, 

 although in what proportion it is impossible to estimate, as very little 

 material is available from this region. The inferior labials are 10 in 



8 



7 



Bay St. Louis, Pensacola, Gainesville, Kissimmeo. Lemon City, 

 Mississippi. Florida. Marion Co., Georgiana, Florida. 



Florida. Enterprise, 



Orlando, 

 Little Sara- 

 sota Bay, 

 Florida. 

 Fig. 41.— Diagra.m .showing the variation in the numher of suprai.aiuals i.»j Thamnohhis 



sauritus sackeni. 



ever}" individual (>xamined. The number of ventral plates is rather 

 variable (fig. 42). The extremes are 154-171, the average number 

 lying between 158-100. There is no definile geographic variation in 



