ZAMENIS HIPPOCREPIS
After Sordelli
The food of this snake is very varied, consisting of voles and mice, young birds which it takes from the nests, being a good climber on bushes and low trees, occasionally of frogs, but above all of other reptiles: lizards, slow-worms, and snakes, which it does not attempt to crush before deglutition. It has even been observed in Istria to eat locusts (Acridium ægyptium) and sphyngid moths.
Reproduction.—Eggs, laid at the end of June or beginning of July in a well-sheltered hole, are a little over twice as long as broad, and measure 1·2 to 1·4 inches in length. The number of eggs is eight to fifteen according to Fatio, about a dozen according to Tomasini, five according to Werner. The pairing was observed by Schreiber at the end of May, the male and female seizing each other reciprocally by the neck with their jaws; this mode of pairing must not, however, be regarded as the rule in this species, for in other cases observed by Schreiber and by Honnorat the pairs were simply entwined by their coils.
7. Zamenis dahlii, Fitzinger
Dahl’s Whip-Snake
Form.—Very slender; head narrow, snout moderately prominent, obtuse. Tail about one-third of the total length.
Head-Shields.—Rostral a little broader than deep, just visible from above. Frontal not or but little broader than the supraocular, once and two-thirds to once and three-fourths as long as broad, as long as or longer than its distance from the end of the snout, shorter than the parietals. Loreal longer than deep. One preocular, usually in contact with the frontal, with a subocular below it; two postoculars. Temporals 2 + 2 or 2 + 3 (rarely 1 + 2). Upper labials eight or nine, fourth and fifth or fifth and sixth entering the eye. Four or five lower labials in contact with the anterior chin-shields, which are shorter than the posterior.
Scales with a single apical pit, very narrow, in nineteen rows. Ventral shields very distinctly angulate laterally, 205 to 218; anal divided; subcaudals 98 to 132.
Fig. 20 (after Sordelli)