Maxillary bones extending forwards beyond the palatines, as in _Sepedon_, with a pair of large poison-fangs; no other maxillary teeth. Head slightly distinct from the neck. Eyes of moderate size, with round or vertically elliptic pupils. Rostral shield very large, detached on the sides. Body cylindrical; scales oblique, smooth or keeled, in 19-23 rows; ventrals rounded. Tail short, obtuse; subcaudal scales in 2 rows. (1) _A. lubricus._--146-167 ventral scales; 20-28 subcaudals. Colour orange or red, with black rings; a black bar below the eyes; upper surface of head sometimes entirely black. Total length, 590 millimetres; tail 55. _Habitat_: Cape Colony and Namaqualand. (2) _A. scutatus_ (Fula-fula of Mozambique).--115-135 ventrals; 24-38 subcaudals. Colour pale grey, with black spots or cross-bars, and a black mark shaped like a circumflex accent on the head. A black collar encircling the neck, and a black vertical streak below the eye. Belly whitish. The total length may be as much as 520 millimetres. _Habitat_: Natal, Delagoa Bay, Mozambique. (f) =Walterinnesia.= Maxillary bones prolonged forwards beyond the palatines, with a pair of large poison-fangs; no other maxillary teeth. Head distinct from the neck; eyes rather small, with round pupils; nostril between two or three nasal shields and the internasal. Body cylindrical; scales smooth or feebly keeled, in 23 rows; ventrals rounded. Tail rather short; subcaudal scales for the most part in 2 rows. _W. ægyptia._--Colour blackish-brown on the back, paler on the belly. Total length, 1,170 millimetres; tail 170. _Habitat_: Egypt. [Illustration: FIG. 34.--SKULL OF _Dendraspis viridis_ (Poisonous West African Colubrine). (After G. A. Boulenger, _op. cit._)] (g) =Dendraspis.= (Fig. 34.) Maxillary bone curved upwards, bearing a pair of powerful poison-fangs, not fissured, and not followed by other teeth; a long tooth at the end of each ramus of the mandible. Head narrow, elongate; eye moderate, with round pupil; nostril between two shields. Body slightly compressed; scales smooth, narrow, very oblique, in 13-23 rows; ventrals rounded. Tail long; subcaudals in 2 rows. (1) _D. viridis._--211-225 ventral scales; 107-119 subcaudals. Colour uniform olive-green. Shields on the head edged with black; lips yellow; belly and tail yellow, with scales and shields bordered with black. Total length, 1,830 millimetres; tail 460. _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.