(i) A small round pot, with flaring rim, of common red ware, showing no attempt at decoration. (j) Scattered throughout the sand, in the midst of these pots, were found 35 very small, flat, circular disks or beads, averaging about one-twelfth inch in thickness. Some were of greenstone, others of a reddish-yellow stone mottled with white. All were well polished. [Illustration: PLATE 17 PAINTED BASIN AND COVER FROM MOUND NO. 16] On removing the sand to a depth of 12 feet the bottom of the chamber was reached. The floor, which was composed of hard mortar, measured 4 by 3 feet, as the chamber was somewhat funnel-shaped, narrowing as it descended. On the bottom of the chamber were found a number of small oyster and cockle shells, with fragments of human bones. Among these was an inferior maxilla in fairly good state of preservation; from the facts that the tooth sockets had disappeared, that there was considerable atrophy along the alveolar processes and widening of the angle between the horizontal and vertical sections of the bone, it had probably belonged to a person of advanced age. MOUND NO. 16 Mound No. 16 was situated about 2 miles due north of the last-described mound, close to the north bank of the Rio Hondo, within the territory of Quintana Roo. It was discovered by an Indian, who had cut a piece of virgin bush with the object of making a milpa. The mound was 35 feet in height by 250 feet in circumference at the base; in shape it resembled a truncated cone, the flattened summit of which measured 30 feet in one direction by 6 feet in the other. The mound was composed throughout of rough blocks of limestone, the interstices of which were filled in with limestone dust and an unusually large quantity of light-brown earth. Excavation was commenced at the top of the mound; for the first 6 feet nothing except a few potsherds was found. Scattered through the next 2 feet of the mound the following objects were brought to light; these were mingled indiscriminately with the limestone blocks of which the mound was built, quite unprotected by cist or chamber: (a) A basin-shaped vessel 20 cm. in diameter, 10 cm. in height (pl. 17), covered by a round conical lid with a semicircular handle. Both basin and cover are painted black and polished, inside and out. Upon the outer surface of the vase and the upper surface of the lid are incised in low relief a series of pictographs, identical upon both. From the nature of the design and the fact that the vase contained a number of fragments of human bones, it seems probable that it was intended for a cinerary urn. The design is of considerable interest and worthy of detailed consideration. The most prominent object upon both the lid and the vase itself is a naked human figure in a recumbent position, with the arms flexed over the chest and abdomen and the knees and thighs semiflexed. The ornaments worn consist of an elaborate feather-decorated