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[Notes on reptiles of Tunesia. VII. Observations on a double-headed snake Natrix (Reptilia: Colubridae)]
Archives De L'Institut Pasteur De Tunis
|March 1, 1979
Abstract:
A case of a double-headed Viperine Snake Natrix maura (Linné, 1758) hatching is reported. Its two heads are side by side, about equally and perfectly developed and the neck is dual for the 8 first vertebras. Two post-pharyngeal fistulas and dissymetries in the cephalic markings and scales are noted. The origin of such an anterior dichtomy is discussed.