Habitat: West Africa, from the Senegal to the Niger; St. Thome Island.
(2) D. jamesonii.—Coloration as before. Scales in 15-19 rows (19-21 on the neck); 210-235 ventrals; 99-121 subcaudals. Tail sometimes black.
Total length, 2,100 millimetres; tail 560.
Habitat: West Africa, from the Niger to Angola; Central Africa.
(3) D. angusticeps (The Mamba).—202-270 ventral scales; 99-121 subcaudals.
Colour green, olive, or blackish, uniform; belly yellowish or pale green; caudal scales and shields not bordered with black.
Total length, 2,000 millimetres; tail 430.
Habitat: West Africa, south of the Congo; Central Africa, East Africa, Transvaal, Natal.
(4) D. antinorii.—Scales in 21-23 rows; 248 ventrals; 117 subcaudals. Colour olive on the back, yellowish on the belly.
Total length, 2,690 millimetres; tail 545.