THE PRINCIPAL SPECIES OF POISONOUS SNAKES 105 
(5) EH. langsdorfii—Ventrals 204—225 ; subcaudals 37—54 ; 
1 + 1 temporals. 
Colour dark brown, with 63 transverse series of cream-coloured 
spots, each occupying one scale; belly yellow, with red cross-bands. 
Total length, 300 millimetres. 
Habitat : Upper Amazons. 
(6) H. buckleyi.—203—211 ventrals ; 39—43 subcaudals; 1 + 2 
temporals. 
Colour orange, with 48—60 black annuli edged with small 
yellow spots; head black; temples yellow. 
Total length, 505 millimetres ; tail 70. 
Habitat : Northern Brazil, Eastern Ecuador. 
(7) Æ. anomalus.—227 ventrals ; 29 subcaudals; 1 + 1 temporals. 
Colour: Body with 55 black annuli separated by narrow 
brownish-white bands; belly vellowish ; anterior half of head black, 
posterior half yellow ; tail yellow or red, with 4 black rings. 
Total length, 280 millimetres ; tail 23. 
Habitat : Colombia. 
(8) H. heterozonus.—S$Scales in 15 rows; 210—219 ventrals ; 
16—23 subcaudals ; 1 + 1 temporals. 
Colour red or brown, with 17 to 23 black rings, mostly narrower 
than the interspaces ; a black band on the head across the eves. 
Total length, 900 millimetres ; tail 40. 
Habitat: Eastern Ecuador, Eastern Peru, Bolivia. 
(9) EH. elegans.—Scales in 15 rows; 189—221 ventrals ; 29—47 
subcaudals ; 1 + 1 temporals. : 
Colour: Black annuli in sets of three, separated by reddish- 
brown interspaces ; 12—17 sets ; head black, with yellow blotches. 
Total length, 730 millimetres ; tail 70. 
Habitat : Mexico and Guatemala. 
(10) H. annellatus—Scales in 15 rows; 200—211 ventrals ; 
30—45 subcaudals ; 1 + 1 temporals. 
Colour black, with 41—49 narrow white rings on the body, 
4—7 on the tail; a white ring on the head. 
