Habitat: Palestine, Arabia, Socotra.
(f) Atheris.
Head very distinct from neck, covered with imbricate scales; eyes large, with vertical pupils, usually separated from the labial shields by small scales; nostrils lateral. Body slightly compressed; scales keeled, with apical pits. Tail moderate, prehensile; subcaudal scales in a single row.
(1) A. chlorechis.—No supraciliary horn-like scales; 9-11 scales from eye to eye; 25-36 rows of scales in the middle of the body, strongly keeled; 154-165 ventrals; 53-62 subcaudals.
Colour green, uniform or with small yellow spots; end of tail yellowish or blackish.
Total length, 520 millimetres; tail 85.
Habitat: West Africa, from Liberia to the Ogowai.
(2) A. squamiger.—No supraciliary horn-like scales; 7-8 scales from eye to eye; 15-25 rows of scales in the middle of the body, strongly keeled; 153-173 ventrals; 51-95 subcaudals.
Colour olive, uniform or with more or less regular, narrow yellow cross-bands, or yellow with green spots; belly pale olive, marbled with black or yellow, or uniform yellow.
Total length, 550 millimetres; tail 100.