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 9-5. Grows to 1,900 milli- 

 metres. 



Habitat : Venezuela, Guianas, Northern Brazil, North-east Peru. 



(2) E. heterochihis. — Six supralabials, second and third entering 

 the eye ; snout narrow ; 209 ventrals. 



Colour red, with black annuli, as in E. marcgravii. 

 Total length, 553 millimetres ; tail 43. 

 Habitat : Brazil. 



(3) E. euryxanthus (Sonoran Coral Snake). — Seven supralabials, 

 third and fourth entering the eye ; internasals nearly as long as the 

 prsefrontals ; 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) E. gravenhorstii. — First lower labial in contact with its 

 fellow; posterior nasal not reaching the preeocular; 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. 



