Subcaudals
Females have from 37 to 47 (mean, 42.0 ± 0.20; N = 79) subcaudals; males have from 43 to 55 (mean, 48.4 ± 0.23; N = 109; [Fig. 3]). Of the 187 specimens examined, 13 (7.0%) have the last pair of subcaudals fused. One specimen has left subcaudal 28 fused with both adjacent subcaudals (also fused) on the right. While reading proof we found two omissions in [Fig. 3]; there should be illustrated two males with 43 subcaudals and three males with 44 subcaudals.
Ventrals minus subcaudals
The value for number of ventrals minus the number of subcaudals varies from 80 to 96 (mean, 88.8 ± 0.39) for 79 females, and from 67 to 83 (mean, 73.8 ± 0.28) for 109 males.
Additional scale characteristics
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.