In studying this design the attention is first attracted by an eye-like figure near the left border. This is formed of a series of concentric circles, the number of which varies from three in the most simple to twelve in the more elaborate forms. The diameter of the outer circle of this figure varies from one-half to one inch. In the center there is generally a small conical depression or pit. The series of circles is partially inclosed by a looped band one-eighth of an inch in width, which opens downward to the left; the free ends extending outward to the border line, gradually nearing each other and forming a kind of neck to the circular figure. This band is in most cases occupied by a series of dots or conical depressions varying in number from one to thirty. The neck is decorated in a variety of ways; by dots, by straight and curved lines, and by a cross-hatching that gives a semblance of scales. A curious group of lines occupying a crescent-shaped space at the right of the circular figure and inclosed by two border lines, must receive particular attention. This is really the front part of the head--the jaws and the muzzle of the creature represented. The mouth is always clearly defined and is mostly in profile, the upper jaw being turned abruptly upward, but, in some examples, an attempt has been made to represent a front view, in which case it presents a wide V-shaped figure. It is, in most cases, furnished with two rows of teeth, no attempt having been made to represent a tongue. The spaces above and below the jaws are filled with lines and figures, which vary much in the different specimens; a group of plume-like figures, extends backward from the upper jaw to the crown, or otherwise this space is occupied by an elongated perforation. The body is represented encircling the head in a single coil, which appears from beneath the neck on the right, passes around the front of the head, and terminates at the back in a pointed tail with well defined rattles. It is engraved to represent the well-known scales and spots of the rattlesnake, the conventionalized figures being quite graphic. In the group of specimens represented in Plate LXIV areas of cross-hatched lines, representing scales, alternate with circular figures, containing two or three concentric circles and a central dot. In some cases one or more incised bands cross the body in the upper part of the curve.