9. Coluber quatuorlineatus, Lacepède
(Elaphis cervone, Aldrovandi; Coluber quatuorradiatus,
Gmelin)
Aldrovandi’s Snake
Form.—Moderately slender. Snout obtuse, scarcely prominent. Tail one-sixth to one-fourth of the total length.
Fig. 22 (after Sordelli)
Head-Shields.—Rostral broader than deep, just visible from above. Frontal once and one-fourth to once and a half as long as broad, as long as its distance from the rostral, shorter than the parietals. Loreal nearly as long as deep, with one or two small shields below it. One preocular, rarely divided, with a subocular below it; two or three postoculars. Temporals 2 + 3 or 3 + 4. Upper labials eight (exceptionally nine), fourth and fifth (or fifth and sixth) entering the eye. Four or five (rarely three) lower labials in contact with the anterior chin-shields, which are longer than the posterior.
COLUBER QUATUORLINEATUS
Young, after Sordelli
