The edge is even and sharp, and but slightly rounded; the beveled faces are quite symmetrical, and meet at an angle of about 35°; the faces are curved slightly, following the original curvature of the shell, and the sides are evenly dressed and taper gently toward the upper end which shows some evidence of battering. The surface of the specimen is slightly chalky from decay. It has been made from a _Strombus gigas_, or some equally massive shell. It was collected at Orange Bluff, Fla., by T. S. Barber. A profile view of the same specimen is presented in Fig. 2. The specimen shown in Fig. 3 was found in Madison County, Ky., and is the only one in the national collection from the Mississippi Valley. It was obtained from a mound, but in what relation to the human remains I have not learned. It is fashioned much like the specimen just described; it is one and a half inches in width at the upper end, and two inches wide near the cutting edge. It has also been made from a very massive shell. Fig. 4 illustrates a specimen from St. Michael's Parish, Barbadoes, West Indies. It is made from the basal portion of a _Busycon perversum_. The handle is curved and neatly rounded, and the edge is beveled or sharpened on the inside only. [Illustration: PL. XXV--SHELL CELTS. 1. Orange Bluff, Fla. (3/4) 2. Orange Bluff, Fla. (3/4) 3. Madison County, Ky. (3/4) 4. Barbadoes, W. I. (3/4)] In the national collection there are about twenty of these objects; six are from Tampa, Fla.; four of these are fragmentary; the remaining two are short and triangular, and have been made, one from a _Busycon perversum_, the other from a _Busycon_ or _Strombus_. The cutting edge is wide and well sharpened. Two are from Cedar Keys, Fla., and are made from thin-walled specimens of the _Busycon perversum_. The larger is six and one-half inches in length by three in width toward the base; the other is about one-half as large. Both are rudely made, and show the effects of use. Five came from East Pass, Choctawhatchie Bay, Fla. Two of them are fragmentary; one of the entire specimens is very well made, and has a regularly beveled, oblique edge, while another is remarkable in having a curiously worn edge, which is deeply serrated by use or weathering. The majority of these specimens are from ancient shell heaps. Three are from St. Michael's Parish, Barbadoes, West Indies, one of which has already been described. Professor Wyman, in the Naturalist for October, 1868, illustrates two of these celt-like implements from the fresh-water shell heaps near St. Johns, Fla. One is made from a triangular piece cut from a _Busycon carica_, so as to comprise a portion of the rostrum, which serves as a handle, and a portion of a swollen part of the body, which terminates in the cutting edge of the tool. The sides and apex are smoothed and rounded, while the base is regularly rounded and ground to an edge like that of a gouge, but with the bevel on the inside.