Habitat: Amazons, Colombia.
(24) E. mipartitus.—Scales in 15 rows; 210-278 ventrals; 24-34 subcaudals.
Colour: black, with 40-68 narrow white annuli; head black to between the eyes, elsewhere yellow.
Total length, 610 millimetres; tail 50.
Habitat: Central America and Tropical South America.
(25) E. fraseri.—Scales in 15 rows; 303 ventrals; 25 subcaudals.
Colour: black, with 75 narrow whitish rings with broken outlines; head black in front, yellow behind.
Total length, 780 millimetres; tail 40.
Habitat: Ecuador.
(26) E. mentalis.—Scales in 15 rows; 255-268 ventrals; 30-31 subcaudals.