The gorget presented in Fig. 1, Plate LI, belongs to the collection of Mr. F. M. Perrine, and was obtained from a mound in Union County, Ill. It is a little more than three inches in diameter and has been ground down to a uniform thickness of about one-twelfth of an inch. The surfaces are smooth and the margin carefully rounded and polished. Near the upper edge are two perforations for suspension. The cord used passed between the holes on the concave side, wearing a shallow groove. On the convex side, or back, the cord marks extend upward and outward, indicating the usual method of suspension about the neck. The cross which occupies the center of the concave face of the disk, is quite simple. It is partially inclosed on one side by a semicircular line, and at present has no other definition than that given by four triangular perforations which separate the arms. The face of the cross is ornamented with six carelessly drawn incised lines, which interlace in the center, as shown in the cut--three extending along the arm to the right and three passing down the lower arm to the inclosing line. I have not been able to learn anything of the character of the interments with which this specimen was associated. Fig. 2 of the same plate represents a large shell cross, the encircling rim of which has been broken away. The perforations are still intact. The cross is quite plain. This specimen is very much decayed, and came to the National Museum inside of a skull obtained from a grave at Charleston, Mo. Beyond this there is no record of the specimen. [Illustration: PL. LI--SHELL GORGETS--THE CROSS. 1. From a mound, Union County, Ill. 2. From Charleston, Mo. (1/1)] In Fig. 1, Plate LII, I present a large fragment of a circular shell ornament, on the convex surface of which a very curious ornamental design has been engraved. The design, inclosed by a circle, represents a cross such as would be formed by two rectangular tablets or slips, slit longitudinally and interlaced at right angles to each other. Between the arms of the cross in the spaces inclosed by the circular border line are four annular nodes, having small conical depressions in the center. These nodes have been relieved by cutting away portions of the shell around them. In the center of the cross is another small node or ring similarly relieved. The lines are neat and deeply incised. The edge of the shell has been broken away nearly all around. The accompanying cut represents the ornament natural size--one and a half inches in diameter and one-sixteenth of an inch in thickness. It was obtained from a mound on Fain's Island, Tennessee.