80 CROTALUSADAMANTEUS. 



The Crotalus horridus has a black band across the forehead, another from the 

 eye to the angle of the mouth; two large bands begin behind the occiput and run 

 along the neck and back to the distance of about one-fifth of the whole animal; 

 these latter bands are the breadth of two scales and a half; two other narrower 

 bands, and of the same length and colour, depart from the temples; while the 

 Crotalus adamanteus is dusky-brown, without any black marks on the head, and 

 has the rhomboidal spots beginning at the back of the occiput, and continuing 

 along the whole extent of the animal to near the extremity of the tail, which is 

 banded. It is highly probable that the figure of the Crotalus durissus of Shaw 

 represents our animal, but the description refers certainly to the Crotalus durissus, 

 and it is mostly taken from Catesby. 



