Of the 246 specimens examined, four (1.6%) have the rostral in contact
with the left prefrontal, and hence the internasals are separated from
one another. One snake has approximately one-fourth (anteriorly) of the
suture between the parietals fused. One specimen has the posterior edge
of the frontal fused with the left parietal. One specimen has the
parietal shield on the right side abbreviated posteriorly. One specimen
has both prefrontals fused with the frontal, although an incomplete
suture is present.