The finest example of these vessels yet brought to my notice was obtained from a mound at Harrisburg, Ark., by Dr. Palmer, in October, 1882. It differs from the other specimens described in having an elaborate ornamental design engraved on the exterior surface. In shape it corresponds pretty closely to the first specimen figured, no part of the spire, however, being cut away; the interior parts have been removed, as usual. The surface is quite smooth, and the ridges on the inner surface of the spire are neatly rounded and polished. Its length is eleven inches, and its width seven. Plate XXIII is devoted to the illustration of this specimen. The entire exterior surface, from apex to base, is covered with a design of engraved lines and figures, which are applied in such a manner as to accord remarkably well with the expanding spiral of the shell. The upper surface of the spire is unusually flat, and has been ground quite smooth. It will be seen by reference to Fig. 2, Plate XXIII, that a series of lines, interrupted at nearly regular intervals by short cross lines and rectangular intaglio figures, has been carried from the apex outward toward the lip. Another series of lines begins on the upper margin next the inner lip of the shell, passes around the circumference of the upper surface, and extends downward over the carina, covering, as shown in the other figure, the entire body of the vessel, excepting the extreme point of the handle. The base of the shell, which is perforated, has a small additional group of lines. The lines of the principal series are, on the more expanded portion of the body of the shell, about eight inches long, and are interrupted by two rows of short lines and two rows of incised rectangular figures. The space between the latter contains the most interesting feature of the design. Three arrow-head shaped figures, two inches in length by one and one-half in width, are placed, one near the outer lip, another near the inner lip, and the third in the middle of the body, a little below the center. These figures are neatly cut and symmetrical, and resemble a barbed and blunt-pointed arrow-head. Near the center of each is a small circle, which gives the figure a close resemblance to a variety of perforated stone implements, one specimen of which has been found near Osceola, Ark. Whatever may be the significance of this design, and it is undoubtedly significant, it is at least a very remarkable piece of work and a highly successful effort at decoration. The pottery of this region which is generally highly decorated with painted and incised lines, contains nothing of a character similar to this, and it is probable that what I have come to consider a rule in such matters applies in this case; the design on the shell is significant or ideographic, that on the pottery is purely ornamental. [Illustration: PL. XXIII--ENGRAVED VESSEL. Harrisburg, Ark.]