Reproduction.—According to Werner, the eggs, two to five in number, are deposited in midsummer; they are remarkably elongate: 21⁄2 inches long, 2⁄3 inch broad.
13. Coluber scalaris, Schinz
The Ladder Snake
Form.—Moderately slender. Snout pointed, strongly projecting beyond the mouth. Tail one-sixth to one-fifth of the total length.
Fig. 26 (after Sordelli)
Head-Shields.—Rostral deeper than broad, forming an acute angle above, wedged in between the internasals, the portion visible from above nearly as long as its distance from the frontal. Frontal about once and one-third to once and a half as long as broad, as long as or shorter than its distance from the end of the snout, nearly as long as the parietals. Loreal longer than deep. One pre- and two or three post-oculars. Temporals 2 + 3 or 2 + 4. Upper labials seven or eight (rarely nine), fourth or fourth and fifth (or fifth and sixth) entering the eye. Four or five lower labials in contact with the anterior chin-shields, which may be either longer or shorter than the posterior.
COLUBER SCALARIS
After Sordelli