102° VENOMS 
from neck; eyes small, with vertically elliptic or sub-elliptic 
pupils; nostril between two nasal shields. Body cylindrical; scales 
smooth, in 15 rows. Tail short; subcaudal scales in 2 rows, or 
partly single, partly in 2 rows. 
(1) E. surinamensis.—Seven supralabials, of which the fourth 
enters the eye; frontal shield very narrow; 167—182 ventrals. 
Colour red, with black annuli disposed in threes (the middle one 
broader), separated by narrow yellow interspaces; 7 or 8 sets of 
annuli on the body; the red scales dotted with black; head red 
above, with the shields black-edged, followed by a black cross-band 
behind the parietals. 
Total length, 740 millimetres; tail 95. Grows to 1,900 milli- 
metres. 
Habitat : Venezuela, Guianas, Northern Brazil, North-east Peru. 
(2) E. heterochilus.—Six supralabials, second and third entering 
the eve ; snout narrow ; 209 ventrals. 
Colour red, with black annuli, as in Æ. marcgraviv. 
Total length, 553 millimetres ; tail 43. 
Habitat: Brazil. 
(3) Æ. euryxanthus (Sonoran Coral Snake).—Seven supralabials, 
third and fourth entering the eye ; internasals nearly as long as the 
præfrontals ; 215—241 ventrals ; 21—29 subcaudals. 
Colour red, with 11 black annuli edged with yellow ; head black. 
Total length, 400 millimetres ; tail 33. 
Habitat : Arizona, Colorado, North-western Mexico. It is found 
in Arizona up to an altitude of nearly 6,000 feet (1,800 metres). 
(4) EH. gravenhorstii.—First lower labial in contact with its 
fellow; posterior nasal not reaching the preocular; 191 ventrals ; 
23 subcaudals. 
Colour: Seven sets of black annuli disposed in threes, median 
annulus the broadest ; head black, with a yellow transverse band 
behind the eyes. 
Total length, 550 millimetres ; tail 50. 
Habitat : Brazil. 
