a sufficient number had accumulated to make it worth while opening the chamber for their reception. In favor of the second theory is the fact that, judging by what could be seen of the teeth and lower jaws, all the skulls were of individuals in the prime of life, no jaws of very young or of very old individuals being discovered. Immediately beneath the skulls were unearthed 12 objects of chert fashioned with great care. Seven of these were spearheads, the other five of eccentric form. The spearheads varied in length from 37 cm. (pl. 15, _c_) to 29 cm. (pl. 15, _f_); they were very well made, some from gray, others from brownish-yellow, chert. The eccentric flints comprised: (a) An animal form, possibly meant to represent a bush rabbit, 30 cm. in length from the forehead to the tip of the tail (pl. 15, _a_); (b) an animal form, evidently meant to represent a turtle or tortoise, 28 cm. in length from the head to the tip of the tail (pl. 15, _g_); (c) a halberd-shaped implement (pl. 15, _b_), exquisitely chipped from light-ocher-colored chert, 44 cm. in its greatest length by 19 cm. in breadth across the widest part of the head. This implement is furnished with two sharp-pointed cutting projections in front, separated by a groove; at the back is a larger triangular sharp projection. The whole implement is well balanced, for use in the hand, by a bulging or thickening of its body between these three projections; (d) an implement chipped from yellowish chert, 44 cm. in length, serrated on each side, pointed at one end and rounded at the other (pl. 15, _d_); (e) a crescentic implement, chipped from yellowish chert, 26 cm. in its greatest length, 17-1/2 cm. across the widest part of the crescent. From the convexity of the crescent project three spines, the central one long and serrated, the lateral ones merely pointed knobs. This object is more crudely chipped and less symmetrical than any of the others (pl. 15, _e_). These eccentrically shaped flint and chert objects seem to be limited in their distribution to that part of the Maya area comprised in southern Yucatan, eastern Guatemala, and most of the colony of British Honduras. The earliest known specimens are probably those now preserved in the Salisbury Museum, England, which have been thus described: