The metates of Chiriqui present a great diversity of form and possibly represent distinct peoples or different grades of culture. They are carved from volcanic rocks of a few closely related varieties, the texture of which is coarse and occasionally somewhat cellular, giving an uneven or pitted surface, well suited to the grinding of maize. Three classes, for convenience of description, may be distinguished, although certain characters are common to all and one form grades more or less completely into another. We have the plain slab or rudely hewn mass of rock, in the upper surface of which a shallow depression has been excavated; we have the carefully hewn oval slab supported by short legs of varied shape; and we have a large number of pieces elaborately sculptured in imitation of animal forms. The first variety is common to nearly all temperate and tropical America and does not require further attention here. The second variety exhibits considerable diversity in form. The tablet is oval, concave above, and of an even thickness. The periphery is often squared and is in many cases ornamented with carved figures, either geometric devices or rudely sculptured animal heads. The legs are generally three in number, but four is not unusual. They are mostly conical or cylindrical in shape and are rather short. The finest example of the second class has an oval plate 37 inches in length, 29 in width, and 2 inches thick, which is nearly symmetrical and rather deeply concave above. The central portions of the basin are worn quite smooth. Near the ends, within the basin, two pairs of small animal-like figures are carved, and ranged about the lower margin of the periphery are eighty-seven neatly sculptured heads of animals. There are four short cylindrical legs. This superb piece of work is shown in Fig. 9. [Illustration: Fig. 9. Mealing stone with large tablet ornamented with animal heads, from Gualaca--1/9.] Examples of the third class are all carved to imitate the puma or ocelot. The whole creature is often elaborately worked out in the round from a single massive block of stone. The thin tablet representing the body rests upon four legs. The head, which projects from one end of the tablet, is generally rather conventional in style, but is sculptured with sufficient vigor to recall the original quite vividly. The tail appears at the other end and curves downward, connecting with one of the hind feet, probably for greater security against mutilation. The head, the margin of the body, and the exterior surfaces of the legs are elaborately decorated with tasteful carving. The figures are geometric, and refer, no doubt, to the markings of the animal’s skin. Nearly identical specimens are obtained from Costa Rica and other parts of Central America. A fine example of medium size is given in Fig. 10. The material is gray, minutely cellular, basaltic rock. The upper surface of the plate is polished by use. The entire length is 17 inches.