Note 42 — THE STEPPES OF INNER AFRICA.
Margaret R. Thomson translation
[Note 42] p. 178.—Cerastes (Vipera hasselquistii).
The horned viper is the most common viper of Northern Africa. It is extremely poisonous. It is of a brownish-white colour with darker markings, and has a scaly spine or horn over each eye. This species is usually supposed to have been Cleopatra’s asp.